24 results about "Polymer encapsulation" patented technology

This invention discloses a physical sealing mechanism for a multilayer polymer-encapsulated liquid metal power supply channel, aiming to solve the reliability problem of flexible electronic devices in complex environments. The mechanism includes: firmly bonding a substrate polymer film to a textile substrate via a thermo-pressing process; forming a conductive layer by spraying liquid metal using a template; achieving multilayer stacking of an intermediate polymer film with through-holes and the conductive layer using solvent-based soft soldering technology; and finally, completely encapsulating the entire circuit by casting or coating a polymer layer. The core of this invention lies in the synergistic use of multiple physical bonding mechanisms to achieve strong interlayer adhesion, effectively preventing leakage or electrical failure of the liquid metal under extreme stretching and underwater environments. This mechanism provides a reliable solution for constructing highly robust, underwater-operable multilayer flexible electronic devices.

The invention discloses near-infrared thermal molecules, nano particles, injectable near-infrared thermal hydrogel and application of the injectable near-infrared thermal hydrogel in preparation of anti-obesity drugs. The structural formula of the near-infrared photothermal molecule is shown in the specification. According to the invention, molecular structure design is carried out to obtain near-infrared thermal molecules with strong near-infrared absorption, bright near-infrared two-region fluorescence emission and high photo-thermal stability; near-infrared photothermal molecules are packaged into spherical nanoparticles by using an amphiphilic polymer through a nanoprecipitation method, the spherical nanoparticles are further mixed with a temperature-sensitive matrix material to prepare the near-infrared photothermal hydrogel capable of being subcutaneously injected, after near-infrared irradiation, adipocyte apoptosis can be remarkably induced, meanwhile, white fat is promoted to be converted into beige fat, and the effect of preparing the near-infrared photothermal hydrogel is achieved. The efficient anti-obesity effect is achieved; and hydrogel degradation, medicament distribution and treatment processes can be tracked in real time through near-infrared two-region fluorescence imaging, so that the controllability and accuracy of treatment are improved. The whole system shows good biocompatibility, and has outstanding application potential in the anti-obesity field.

The invention discloses a battery fiber of an ultraviolet curing electrolyte as well as a preparation method and application of the battery fiber. The battery fiber comprises an electrode fiber core, a gel electrolyte layer and a polymer encapsulation layer from inside to outside. The electrode fiber core is formed by twisting and compounding a positive electrode fiber and a negative electrode fiber; the gel electrolyte layer is formed by curing a precursor containing a photocuring monomer, a photoinitiator, a linear polymer and a lithium salt through ultraviolet irradiation. According to the preparation method, a stable gel electrolyte layer is rapidly constructed on the surface of the fiber at normal temperature through an ultraviolet curing technology, so that the potential safety hazard that a traditional liquid electrolyte is easy to leak is solved, an electrode-electrolyte interface is also remarkably optimized, and the interface impedance is reduced. The obtained battery fiber has excellent flexibility, high safety and good electrochemical performance, the slender one-dimensional form of the battery fiber can be directly woven into an intelligent fabric through a textile technology, and an ideal flexible embedded power supply solution is provided for wearable electronic equipment.

The invention discloses a polymer encapsulation system-based tamponade type flexible optical waveguide integrated optical genetic probe, the appearance of an implantation part of the probe is of a flat tamponade structure, and the probe comprises a cuboid trunk and a crown which is positioned at the tail end of the trunk and is formed by nesting and stacking at least two layers of prisms with tips; the internal structure of the optical genetic probe comprises a polymer cladding and a waveguide core layer; the waveguide core layer is located inside the polymer cladding or above the polymer cladding; the refractive index of the waveguide core layer is greater than that of the polymer cladding layer. The tower-loose structure of the probe can disperse the tip stress of the probe during implantation, protect the functional units distributed at the extension part of a tree crown, and prevent the layering of the probe structure from causing the peeling, damage and failure of the functional units; after implantation, tooth-shaped anchoring is formed between the extending part of the tree crown and the brain tissue, stronger interaction is generated, probe displacement caused by micro-motion in the brain tissue is effectively resisted, and the stability of long-term signal acquisition sites is ensured.

The present invention relates to a polymer-encased electronic component (10), wherein the electronic component (20) has a metal surface (30) at least in places, wherein the polymer-encased electronic component (10) has a polymer matrix (40), wherein the metal surface (30) of the electronic component (20) is connected to an adhesion promoter (50) and wherein the adhesion promoter (50) comprises a compound of formula M1 2[M2F6] where M1 = H, NH4, Li, Na, K, Rb, Cs and M2 = Ti, Zr, characterised in that a phenoplast (60) is arranged between the adhesion promoter (50) and the polymer matrix (40).

This invention discloses a cellulose-based piezoelectric composite material, a piezoelectric device, and its preparation method, belonging to the technical field of piezoelectric materials and flexible electronic devices. Addressing the problems of low stress transfer efficiency and limited output performance in traditional piezoelectric devices due to low substrate flexibility, uneven dispersion of piezoelectric fillers, and weak interfacial bonding, this invention first involves microwave treatment and chemical pretreatment of biomass raw materials to remove lignin and hemicellulose while retaining their three-dimensional porous structure, resulting in a cellulose framework. The framework is then functionalized through methods such as impregnation with metal ion solutions, vacuum impregnation with a two-dimensional material dispersion after surface modification, or further in-situ synthesis of metal oxides via hydrothermal reaction. Finally, it is impregnated with PVDF or PDMS solutions and compressed and cured to form an elastic composite material. This method utilizes a biomass template to achieve uniform loading and ordered composite of functional components, and polymer encapsulation enhances interfacial stability. It is primarily used for micro-energy harvesting and self-powered sensing in flexible wearable devices.

The invention relates to an illuminable glazing unit (100) for a vehicle, comprising an outer glass pane (1), an inner pane (2), a laminated interlayer (3) and a peripheral masking layer (4). The outer edge face is indented from the first edge face on at least one first edge, called offset outer edge, by r1. It comprises a peripheral seal (8) which is an opaque polymer encapsulation of the edge face of the glazing, framing the laminated glazing, and a peripheral opaque element extending the encapsulation and / or connected to the laminated interlayer in the area of the offset outer edge, between the outer edge face and the first edge face.

The present application provides a near-infrared two-region AIE probe and a nano material for light-activated treatment of bladder cancer, and belongs to the technical field of material chemistry. In view of the poor treatment effect of photothermal therapy on bladder cancer, the present application designs an AIE probe capable of efficient photo-thermal conversion in the near-infrared two-region, and on the basis of the AIE probe, the AIE probe is blended with a heat-sensitive NO donor to release NO through near-infrared light-induced photo-thermal conversion. After being encapsulated by an amphiphilic polymer, the surface of the cell membrane is modified with PMCA calcium ion channel blocking peptides and tumor surface FGFR1 receptor targeting peptides. The PMCA calcium ion channel blocking peptides on the surface of the cell membrane and the NO released by the heat-sensitive NO donor jointly act on the calcium ion channel through endogenous and exogenous combined regulation, causing calcium overload in the tumor and inducing tumor cell apoptosis. The tumor surface FGFR1 receptor targeting peptides on the surface of the cell membrane can realize efficient enrichment of the nano material at the tumor site, thereby improving the treatment effect. The material provided by the present application provides a new idea for the treatment of bladder cancer.

The invention relates to the technical field of polymer packaging material viscoelasticity constitutive model testing, in particular to an improved polymer packaging material viscoelasticity constitutive model testing and fitting method.The method includes the steps that an actual stress relaxation curve and a main curve are subjected to overlapping mean value re-fitting, and the shape and parameters of the main curve are optimized; replacing the energy storage modulus translation amount with the relaxation modulus translation amount to optimize a shift factor; an interpolation method is adopted to replace a WLF equation in numerical calculation, so that the input precision is improved; sample errors and human experience errors are reduced from multiple links of testing, fitting and numerical calculation, and fitting deviation of a WLF equation is eliminated, so that the model keeps high precision in a wider temperature range, and closed-loop verification of viscoelasticity testing is realized; a high-precision material test engineering scheme is provided for advanced electronic packaging, the production loss is reduced, the prediction capacity for packaging signals, heat transfer and stress is remarkably improved, the product yield is increased, the service life is prolonged, and the long-term reliability is improved.

The application discloses a packaging method and structure for a flexible thermoelectric element, and relates to the technical field of semiconductor device preparation.The packaging method comprises the following steps: preparing a thermoelectric series structure, wherein the thermoelectric series structure comprises an electrode layer, a P-type thermoelectric arm and an N-type thermoelectric arm; the electrode layer is composed of a plurality of metal electrodes; a cloth adhesive is coated on the outer surface of the electrode layer; a first packaging layer is attached to the outer side of the electrode layer of the thermoelectric series structure; a second packaging layer is attached to the outer side of the electrode layer of the thermoelectric series structure; finally, the packaging of the flexible thermoelectric element is completed after static pressure forming; the application adopts a non-continuous bonding structure of packaging cloth to package the thermoelectric element, and replaces traditional dense polymer packaging materials; by using the unique packaging mode of "point bonding and surface ventilation" between the packaging cloth and the device, the stability and comfort of the device structure are ensured.

The invention relates to an optical fiber type quantum dot temperature detection probe and a manufacturing method thereof, the optical fiber type quantum dot temperature detection probe comprises an optical fiber end face, an end face hydrophilic layer is arranged on the optical fiber end face, a quantum dot close-packed single-layer array is prepared on the end face hydrophilic layer, and a dielectric nano spherical particle single-layer array is prepared on the quantum dot close-packed single-layer array. A polymer packaging layer is arranged on the outer side of the quantum dot dense-arrangement single-layer array and the outer side of the dielectric nano spherical particle single-layer array, the quantum dot dense-arrangement single-layer array is a fluorescence signal generation layer, and the dielectric nano spherical particle single-layer array is a scattering enhancement layer; the optical fiber type quantum dot temperature detection probe is respectively connected with a laser and a spectrograph through branched optical fibers, and the spectrograph is connected with a computer to form a temperature detection device; a fluorescence spectrum emitted after the quantum dots are excited is scattered and enhanced by the dielectric nano spherical particle array and then is transmitted to a spectrograph, and a spectral signal is processed by a computer to obtain the local temperature of the end face of the optical fiber; the fluorescence signal intensity and consistency of the quantum dots are improved, and high-sensitivity detection of the environment temperature is achieved.

This invention provides a method for separating optical isomers of single-walled carbon nanotubes. The separation method includes: mixing single-walled carbon nanotube raw materials, a conjugated polymer, and an organic medium to form a mixed system, wherein the organic medium contains a chiral organic component; dispersing the mixed system so that the conjugated polymer, with the participation of the organic component, selectively encapsulates and disperses single-walled carbon nanotubes of the target chiral and optically active configurations, forming a dispersed system; and post-processing the dispersed system. By adding a chiral organic component, this invention allows the chiral recognition process to occur simultaneously with the polymer encapsulation process, enabling differential selection of different optical isomers of carbon nanotubes. This achieves a higher level of fine separation, moving beyond chiral type separation to optical isomer separation. It eliminates the need for covalent modification of the carbon nanotubes, thus better preserving their intrinsic structure and excellent optical properties.

The application belongs to the field of battery materials, and discloses a near-zero expansion silicon-carbon negative electrode material and a preparation method and application thereof. The negative electrode material comprises, from inside to outside, an inner composite region, an outer composite region and an encapsulation layer. The inner composite region comprises a first carbon framework and nano silicon particles, and the nano silicon particles are distributed in the mesopores of the first carbon framework. The outer composite region comprises a second carbon framework and nano silicon particles, and the nano silicon particles are distributed in the micropores of the second carbon framework. The encapsulation layer is a functional polymer encapsulation layer, and the encapsulation layer at least coats part of the surface of the particles formed by the outer composite region and the inner composite region. The mesoporous carbon framework of the inner composite region provides a buffer for silicon volume expansion and guarantees ion transmission, the microporous carbon framework of the outer composite region limits silicon deformation, and the encapsulation layer has the functions of isolating electrolyte, anchoring reinforcement and electrical conductivity. The three form a gradient protection, realize near-zero expansion, balance capacity performance, expansion performance and cycle stability, obtain relatively optimal capacity and cycle performance, and have a relatively low expansion rate.

This application relates to the field of semiconductor technology and provides a method for preparing and analyzing high-power bare chip failure analysis samples. The method includes: fixing the back surface of the high-power bare chip under test to the patch area of ​​a carrier substrate; wire bonding the functional electrode area on the amorphous back surface of the chip to the lead pads of the carrier substrate; preparing a polymer encapsulation layer on the amorphous back surface to obtain a molded high-power bare chip; peeling the molded high-power bare chip from the patch area of ​​the carrier substrate; grinding, fine polishing, and thinning the back surface to obtain the target failure analysis sample; powering the target failure analysis sample by connecting the lead pads outside the back surface area; observing the back surface area of ​​the target failure analysis sample to determine the failure location. This application not only avoids high-power bare chips being broken down or burned by high voltage and high current in failure analysis scenarios, but also significantly improves the sample preparation efficiency and quality of high-power bare chip failure samples.

Various aspects of photovoltaic modules are provided herein, including: an outer glass layer, an inner glass layer, a PV structures disposed on the outer glass layer, and a polymeric encapsulant having a tailored thickness and tailored elastic modulus is disposed over the PV structures and between the inner and outer glass layers, where outer glass layer is at least three times thinner than the inner glass layer; such that the module exhibits a failure probability (Pf) of less than 15% when tested according to the IEC 61215 & ASTM E1038 Hail Test.

The utility model belongs to the technical field of electronic materials and devices, and particularly relates to an N2200-based top gate bottom contact polymer field effect transistor, which comprises a substrate, and an organic semiconductor layer, a polymer dielectric layer and a polymer packaging layer which are sequentially arranged on the substrate and are made of N2200, one end of the organic semiconductor layer is electrically connected with a source electrode, and the other end is electrically connected with a drain electrode; a grid electrode is arranged between the polymer dielectric layer and the polymer packaging layer, and the grid electrode is electrically connected with the polymer dielectric layer; and the organic semiconductor layer is made of a material of poly (naphthalene diimine)-bithiophene P (DNI2OD-T2), namely N2200. According to the utility model, N2200 is used as the organic semiconductor layer, nickel and gold are evaporated on the substrate to serve as the source and drain electrodes, polymethyl methacrylate is used as the dielectric layer, the top-gate bottom-contact high-performance transistor is prepared, and meanwhile, the packaging layer is added on the surface of the organic field effect transistor by a simple spin-coating method, so that the surface defects of a packaging film can be effectively reduced, and the reliability of the organic field effect transistor is improved. The operation is simple and the complexity is reduced.

The invention discloses an ultrasound-guided nerve block puncture needle and a medicine injection method thereof, and relates to the technical field of medical instruments, the ultrasound-guided nerve block puncture needle comprises a needle tube, a needle head arranged at one end of the needle tube, a needle core arranged in the needle tube, and a liquid guide tube arranged on the needle tube and communicated with the needle tube, a substrate layer for improving the echo intensity is arranged on the needle head, a microarray structure for expanding the effective reflection area is arranged on the substrate layer, a polymer packaging layer is arranged on the microarray structure, a strong ultrasonic echo basis can be provided by arranging the substrate layer, the microarray structure is arranged on the substrate layer, and the ultrasonic echo intensity can be improved by arranging the polymer packaging layer on the substrate layer. A clear image of the whole side wall of the puncture needle can be reconstructed by ultrasonic equipment, the fragile microstructure can be protected by arranging the polymer packaging layer, the acoustic conversion process is further optimized by selecting a polymer material with proper acoustic impedance, and meanwhile friction is reduced.

The invention provides a graphene phase change material polymerization packaged integrated heat dissipation device and a preparation method thereof, and the preparation method comprises the following steps: mixing a graphene material with a phase change material to prepare a graphene phase change matrix; processing in the graphene phase change matrix to form a micro-channel structure; the method comprises the following steps: depositing a polyamide acid precursor on the surface of a graphene phase change substrate to obtain a polyamide acid precursor film, then carrying out thermal imidization treatment to obtain a continuous polyimide polymer packaging film, then injecting a cooling liquid into a micro-channel of the heat dissipation device, and carrying out packaging to obtain the integrated heat dissipation device. The graphene phase change matrix improves the heat conductivity coefficient and realizes light weight, so that the requirements of high efficiency and low-weight heat dissipation are met; the micro-channel structure and the phase change material function cooperate to realize integration of energy storage, heat conduction and heat dissipation, and the heat dissipation power is improved; an ultrathin polyimide packaging film is formed through polymerization packaging, and zero-wrapping-edge insulation packaging of a complex structure is achieved.

The invention provides a preparation method of a sulfonated polyaniline coated Prussian blue analogue derived ferromanganese oxide composite electrode, which comprises the following steps: firstly, synthesizing novel sulfonated polyaniline (SPANi) through copolymerization of aniline and 2-aminobenzene sulfonic acid, so that a sulfonic acid group (-SO3H) is fixed on a PANi main chain to serve as a proton library to provide protons for PANi; the oxidation-reduction reaction is promoted; and the pseudocapacitance characteristic is enhanced. And then further carrying out in-situ polymerization on the SPANi on a manganese iron oxide (MFO) derived from a Prussian blue analogue, so as to prepare the conducting polymer encapsulated bimetallic oxide hollow nanocube composite material SPANi / MFO. Wherein the SPANi not only coats the surface of the MFO, but also fills the cavity of the MFO, and the mass ratio of the SPANi to the MFO is 1: (0.01-0.1). The composite electrode prepared by the invention has the advantages of high capacitance capacity and rate capability and long-term cycle stability, and solves the problem of continuous capacity loss of a conductive polymer-based electrode in the operation of a supercapacitor. According to the invention, the development and application of the functional nano material electrode coated with the conductive polymer for the supercapacitor can be promoted.

The invention discloses a multi-layer composite electromagnetic shielding material and a preparation method and application thereof.The multi-layer composite electromagnetic shielding material is composed of a wire mesh, a liquid metal gallium coating and a polymer packaging layer, a metal wire mesh base body serves as a carrier, and a good conductive network structure and mechanical support can be provided; the mechanical stability of the whole material is ensured; the liquid metal gallium plating layer forms a continuous conductive layer on the surface of the metal wire mesh to enhance the electromagnetic wave reflection and absorption capability, and forms a dual conductive path with the metal wire mesh to improve the shielding efficiency; the polymer packaging layer endows the material with excellent flexibility and environmental resistance, and liquid metal leakage or oxidation is avoided. The metal wire mesh and the gallium plating layer form a stable conductive-reflection composite structure, and the polymer layer further ensures the overall flexibility and durability, so that the multilayer composite structure shows efficient and stable electromagnetic shielding performance in a wide frequency band range.

A cold plate for cooling memory or PCIe modules includes a metal heat-spreader plate, a thermally conductive gel body beneath the plate, and a flexible polymer encapsulation film that wraps the gel body and presents a device-facing surface contacting the module. Heat flows from the module through the film into the gel and into the plate. In some embodiments the gel is a hydrogel loaded with thermally conductive particles (e.g., boron nitride, alumina, graphene), and the film is a waterproof, extensible material such as TPU that is less compliant than the gel to restrain lateral flow. The plate can be thermally coupled at its longitudinal ends to heat-rejection regions, and may comprise multiple parallel strips aligned over corresponding gel bodies to serve multiple adjacent modules. Retention fixtures may secure the assembly against airflow and vibration.

An implantable continuous analyte monitor may include a printed circuit board (PCB), one or more sensor electronics, an analyte sensor, a rechargeable battery connected to the PCB and configured to supply power to the sensor electronic(s), a receiver induction coil configured to produce an induced current for charging the rechargeable battery in a wireless and transcutaneous manner, and a polymer encapsulation medium that encapsulates the PCB, the sensor electronic(s), the rechargeable battery, and the receiver induction coil. At least part of the analyte sensor remains unencapsulated by the polymer encapsulation medium to expose the analyte sensor to interstitial fluid when the implantable continuous analyte monitor is subcutaneously implanted in a subject.

The invention discloses a packaging method and a packaging structure for a flexible thermoelectric element, and relates to the technical field of semiconductor device preparation, and the packaging method comprises the steps: preparing a thermoelectric series structure which comprises an electrode layer, a P-type thermoelectric arm and an N-type thermoelectric arm; the electrode layer is composed of a plurality of metal electrodes; coating the outer surface of the electrode layer with cloth glue; a first packaging layer is attached to the outside of the electrode layer on one side of the thermoelectric series structure; a second packaging layer is attached to the outside of the electrode layer on the other side of the thermoelectric series structure; and finally, the packaging of the flexible thermoelectric element is completed after static pressure molding. According to the invention, a discontinuous bonding structure of the packaging cloth is adopted to package the thermoelectric element, and a traditional compact polymer packaging material is replaced; and the unique packaging mode of point-like adhesion and planar ventilation between the packaging cloth and the device is utilized, so that the structural stability and comfort of the device are ensured.

The application discloses a testing device and method for hard polymer packaging stress under limited constraint structure. The device adopts a structure form of rigid structure covering hard polymer, flexible and deformable parts are designed in the local part of the rigid structure, a limited constraint structure is constructed, and the formation process of stress of the hard polymer in the curing process and under high and low temperature environments is reflected by monitoring the mechanical strain of the position of the measuring point. Meanwhile, the device takes the cylinder as a medium layer, ensures that the sensor and the hard polymer in the flowing state are not directly contacted, reduces the interaction between the sensor and the hard polymer, and thus reduces the interference signal in the testing process. The method deducts the influence of heat output in the strain testing, obtains accurate mechanical strain results, and improves the analysis precision of the hard polymer packaging stress. The application is suitable for electronic packaging stress analysis with the constraint degree between two-dimensional constraint and three-dimensional constraint, the testing method is simple and easy to implement, and has a wide application prospect.