456 results about "Polymer substrate" patented technology

The invention belongs to the technical field of flame retardants, and particularly relates to a high-thermal-stability polyphosphate flame retardant and a preparation method thereof. The DOPO is modified through the polyethylene glycol acrylate, methyl methacrylate and dicumyl peroxide composite solution, double bonds of the polyethylene glycol acrylate and P-H bonds of the DOPO can be subjected to nucleophilic addition to form stable C-P bonds, and thermal migration of the DOPO is hindered; dOPO has polymerization double bonds of methyl methacrylate and long carbon chains of polyethylene glycol acrylate, so that the compatibility of the polyphosphate flame retardant and a polymer substrate is improved, and phase separation is avoided; maleic anhydride grafted silicone oil is connected to the surface of an amino modified gamma-cyclodextrin-modified DOPO inclusion compound, so that the polyphosphate flame retardant has high thermal stability and high compatibility after long-chain alkyl modification; amino groups in the modified gamma-cyclodextrin react with maleic anhydride grafted silicone oil to generate an amido bond cross-linked network, so that the thermal migration of DOPO is reduced together, and the high thermal stability of the polyphosphate flame retardant is improved.

The invention relates to the technical field of mechanical parts, and discloses a high-bearing engineering plastic worm gear applied to a light truck electric power steering system and a manufacturing process, and the manufacturing process comprises the following steps: pretreatment of a polymer base material, preparation of a composite reinforcing material, preparation of an injection molding raw material, precise injection molding, post-treatment and detection. After a polymer base material is subjected to fluorination activation treatment, the surface energy of the material is reduced, the interfacial compatibility with a composite reinforced material is enhanced, and through the synergistic effect of chemical bonding and physical anchoring formed between matrix resin and a modified reinforcement body, the interfacial layering tendency of engineering plastic and a fiber reinforced phase is overcome, so that stress transmission is more uniform; meanwhile, the functional additive components generate an in-situ synergistic effect in the precise injection molding process, and form a multi-stage enhanced network with matrix resin, so that the worm wheel matrix is endowed with excellent overall bearing strength and fatigue fracture resistance, and the structural integrity under the working conditions of high load and high-frequency steering is ensured.

The present disclosure relates to the technical field of film material, and particularly to a polymeric polyphenol-modified polymer film, a preparation method thereof and a metallized polymer film. According to the present disclosure, corona treatment is performed to a surface of a polymer layer, so that a polar modifying liquid can uniformly coat the surface of the polymer layer, thereby forming a modification layer tightly combined with the polymer layer. Thus, the low-polarity polymer layer surface can be imparted with a durable high polarity. Consequently, the polymer layer is capable of being stably and tightly bonded to a material layer with high polarity and high surface tension, such as a metal layer, for a long period of time, effectively broadening the application scenarios for non-polar polymer substrate layers. By controlling the concentrations of the polyphenolic compound and the cross-linking agent in the modifying liquid, the modification layer formed by a cross-linking reaction can have a suitable cross-linking density and an adequate number of hydroxyl groups, thereby further effectively and stably enhancing the long-term polarity and surface tension of the polymer layer. The preparation method is simple and easy to operate, cost-effective, efficient, and easy to scale up.

The invention relates to a high-voltage polyoxyethylene (PEO)-based solid electrolyte and a preparation method thereof, and belongs to the technical field of solid-state battery materials. The electrolyte is composed of a polymer substrate, an inorganic filler, a cosolvent and a lithium salt, the polymer substrate is a PEO-polyacrylonitrile (PAN) composite substrate; the inorganic filler is lithium titanium aluminum phosphate LATP, and the cosolvent is fluoroethylene carbonate FEC; the lithium salt is lithium bis (trifluoromethanesulfonic acid) imide LiTFSI and lithium difluoro (oxalato) borate LiDFOB; the dispersing agent is acetonitrile ACN. The method has the advantages that PEO and FEC are complexed to form a new structure, and room-temperature efficient operation of a single-salt (LiTFSI) system is realized; and meanwhile, LiDFOB is cooperatively introduced to construct a stable passivation layer on a positive electrode interface, FEC synchronously induces to generate LiF-rich stable SEI on a lithium negative electrode, and the interface compatibility and electrochemical stability of the electrolyte to a high-voltage electrode are remarkably improved.

The invention discloses a micro-through-hole structure polymer metallization method for guided wave transmission, and belongs to the technical field of photoelectric device processing, a polymer substrate is used for replacing a traditional all-metal material, and the micro-through-hole structure polymer metallization method for guided wave transmission is achieved through the multi-stage processes of plasma activation, chemical coarsening, sensitization, chemical plating, electroplating and the like. And forming a compact and high-adhesion metal layer on the inner surface of the through hole of the polymer substrate. In the process, a microfluid pump or a peristaltic pump is adopted to drive the solution to circularly flow in the through hole and the microcavity. According to the micro-through-hole structure polymer metallization method for guided wave transmission, dynamic flowing of a chemical plating solution in a micro-through hole and an internal cavity is achieved by introducing a micro-fluid pump or a peristaltic pump, and therefore a uniform, compact and firmly-attached metal layer is obtained.

Increasingly, plastics made from fossil raw materials such as petroleum or natural gas are being supplemented or replaced by plastics based on renewable raw materials obtained through biochemical processes. The question of sustainability then also arises for the plastic additives used for these plastics (and for plastics made from fossil raw materials). Therefore, there is a need for plastic additives based on renewable and readily available raw materials that are highly effective, low volatility, and compatible with polymeric substrates.

The invention belongs to the technical field of super-hydrophobic materials, and particularly relates to a heat-conducting super-hydrophobic anti-icing material as well as a preparation method and application thereof. The heat-conducting super-hydrophobic anti-icing material comprises a heat-conducting polymer substrate which is composed of resin and a heat-conducting filler modified by a silane coupling agent; the mass ratio of the resin to the heat-conducting filler is (1.5-4.0): 1; the super-hydrophobic particle layer is formed on the surface of the heat-conducting polymer substrate and comprises silicon dioxide particles modified by a low-surface-energy modifier; the mass ratio of the silicon dioxide particles to the low surface energy modifier is (7-8): 1; wherein the particle size of the heat conducting filler is 10 [mu] m-50 [mu] m, and the particle size of the silicon dioxide particles is 10 nm-20 nm; the heat-conducting polymer substrate and the super-hydrophobic particle layer jointly form a micron-nano double coarse structure.

The present application relates to the field of fluorescent anti-counterfeiting detection technology, in particular to a fluorescent anti-counterfeiting super-hydrophobic composite film with multiple color changes and a preparation method thereof.The fluorescent anti-counterfeiting super-hydrophobic composite film with multiple color changes can realize the color change of the film surface by changing the excitation wavelength.The multiple color changes are realized by blending two different fluorescent dyes, encapsulating the fluorescent dyes to prepare a fluorescent anti-counterfeiting emulsion, and then spraying the emulsion on the surface of a polymer substrate to obtain the fluorescent composite film with super-hydrophobic characteristics and multiple color changes.The fluorescent anti-counterfeiting composite film prepared by the present application has the characteristics of multiple color changes, strong fluorescent signal and good fluorescent performance stability.

This relates to assembling individual components on a circuit board. [Solution] The system comprises a vacuum chuck and a tape. The tape comprises a flexible polymer substrate and an adhesive die-capturing film positioned on the flexible polymer substrate facing the front of the flexible polymer substrate. The tape is held in the vacuum chuck by suction applied to the rear surface of the flexible polymer substrate.

An electrochemical device separator of the present invention comprises: a porous polymer substrate; and a coating layer which is provided on at least one surface of the porous polymer substrate and which includes inorganic particles, a polymer binder and a dispersant. The coating layer is formed of a coating layer composition, wherein the coating layer composition includes inorganic particles, a polymer binder and a dispersant, the dispersant including a maleic acid monomer.

The application belongs to the field of catalyst synthesis, and relates to a polymer polynuclear boron organic catalyst, a preparation method and application thereof, the preparation method of the catalyst comprises the following steps: adding tetrahydrofuran into a catalyst precursor, then adding a borohydride reagent drop by drop, heating the reaction mixture at 25-80 DEG C for 22-26 h, vacuum concentrating the reaction mixture to obtain a crude product, purifying the crude product by washing with pentane for 2-5 times, and vacuum drying the product at normal temperature for 10-14 h to obtain the catalyst; the catalyst precursor and a preparation method thereof are also provided; the polymer polynuclear boron organic catalyst provided by the application has the advantages of high activity, simple preparation method and low cost, and the catalyst can control the polymer substrate type and the polymer type by adjusting the reaction conditions, the catalytic system and the substrate, and can efficiently prepare polymers such as polyether, polyester and polycarbonate due to the synergistic effect of the polynuclear boron center, so that the types of the organic catalyst and the polymer are greatly expanded.

An apparatus, such as an electronic device, may have a polymer substrate or layer, and a coating on the polymer substrate / layer. The coating may include an interfacial layer and a ceramic multilayer hard coat on the interfacial layer. The interfacial layer may be a non-nitride material, such as an oxide material, that is applied to the polymer substrate / layer. The ceramic multi-layer hard coat may be sputtered onto the interfacial layer and may include alternating nitride layers (e.g., oxynitride layers) with tensile stress and compressive stress. The presence of the interfacial layer may protect the polymer substrate / layer from damage during the sputtering of the ceramic multilayer hard coat.

The present invention relates to the technical field of flame retardant materials, and specifically discloses a carbon quantum dot, a flame retardant biomass composite film, a preparation method and an application. The present invention uses urea and its derivatives as hydrogen bond donors, aminoglycerol-type substances as hydrogen bond acceptors, and then coordinates and combines with aluminate to obtain a precursor with good chemical stability; the precursor is used as a raw material to prepare carbon quantum dots through solvent thermal reaction. The flame retardant film formed by the carbon quantum dots, lignin and cellulose is used to modify the polymer substrate, which effectively solves the problems of poor compatibility and bonding between lignin, cellulose and the polymer substrate, and the synergistic effect between the carbon quantum dots and lignin and cellulose significantly improves the flame retardant effect of the biomass composite film. At the same time, it also effectively suppresses the smoke production when the polymer substrate burns, which is conducive to expanding the application field of polymer materials and has broad application prospects in the flame retardant field.

This invention relates to a method for preparing a polymer-supported vertical MOF composite membrane. The method includes: adding dopamine to a metal and ligand synthesis solution; vertically immersing a polymer substrate in the synthesis solution; and directly preparing a vertically oriented MOF composite membrane at room temperature using an in-situ growth method. The advantages of this invention are that the synthesis process does not use a template agent, is carried out in an aqueous phase at room temperature, and yields a MOF membrane with good vertical orientation, demonstrating potential for large-scale preparation.

The application discloses a method for directly preparing a nuclear micropore membrane with regularly arranged nuclear micropores based on a large-area AAO transmission film, and belongs to the technical field of nuclear micropore membrane preparation. The method comprises the following steps: taking a large-area through-hole anodic aluminum oxide (AAO) film as an ion transmission template, closely adhering the AAO film to a polymer substrate, and performing one-time vertical high-energy particle irradiation; particles penetrate along the regular channels of the AAO and form a large-area regular irradiation damage array on the substrate, which corresponds to the template; and through sensitization, chemical etching and post-processing, a nuclear micropore membrane with consistent nuclear micropore distances and regular arrangement is directly obtained. The method omits the traditional multiplication, alignment and multiple irradiation steps, is simple in process, high in product yield, and capable of large-area mass production, and is high in regularity of the nuclear micropore array, adjustable in parameters, and significantly improves the application performance of the nuclear micropore membrane in high-end fields such as radiation detection, wave absorption and high-precision separation.

The utility model is designed for the rapid (up to 20 minutes) detection of at least 10 types of analytes in environmental samples (water, air, soil, etc.) and clinical specimens. The immunochromatographic test strip for multiplex analysis includes a polymer substrate with an applied immunochromatographic membrane and a capture pad. The test and control zones of the test strip are designed as two rows of transverse microstrips occupying no more than half the width of the test strip. The test strip includes a marker for coordinating the cutting of test strips. The technical result consists in reducing the time for recording the luminescent signal from test strips in an automated system. 3 c.p. phyl., 3 fig., 2 tables.

The application discloses a flexible terahertz metamaterial sensor and a preparation method thereof, which comprises, from top to bottom, a reinforcing layer, a carbon nanotube film layer and a polymer substrate layer; the reinforcing layer is composed of a graphene and zinc oxide composite material; the reinforcing layer and the carbon nanotube film layer are consistent in shape and are both periodic strip structures. The super material sensor is based on the synergistic effect of a ternary system of zinc oxide / graphene / carbon nanotube, wherein zinc oxide nanoparticles grow directionally on a graphene sheet through a Zn-O-C bond, and a carbon nanotube film constructs a three-dimensional conductive network, thus solving the dielectric loss problem of a traditional noble metal-based sensor structure. The phonon resonance characteristics of zinc oxide are coupled with graphene plasmons, a high-efficiency charge transfer channel is formed at a heterojunction interface, and the conductivity and terahertz transmission efficiency are improved.

The application belongs to the technical field of heat-conducting materials, and relates to a directional high-thermal-conductivity impact-resistant isotactic polypropylene composite material based on three-dimensional printing and a preparation method thereof.The directional high-thermal-conductivity impact-resistant isotactic polypropylene composite material is formed by three-dimensional printing and heat annealing treatment of a molded polymer substrate and isotactic polypropylene composite material filled with surface-modified heat-conducting fillers.The directional high-thermal-conductivity impact-resistant isotactic polypropylene composite material prepared by the application has the advantages of high out-of-plane thermal conductivity, high impact resistance, high shape controllability, low warping and the like.The impact strength of the directional high-thermal-conductivity impact-resistant isotactic polypropylene composite material prepared by the application can reach 35 KJ / m 2 , the tensile strength can reach 45 MPa, and the out-of-plane thermal conductivity is all above 4 W / (m*K).

This document describes electromagnetic radiation (EMR) transmissive polymer substrates and techniques for producing EMR transmissive polymer substrates by pre-treating polymer substrates with at least one lipid. In aspects, the EMR transmissive polymer substrates are infrared (IR) transmissive polymer substrates and the techniques described are for producing IR transmissive polymer substrates. In general, disclosed techniques include applying a coating of at least one lipid to at least one surface of a polymer substrate and then performing a heat-treatment process on the coated polymer substrate. The techniques may also include performing a cooling process on the polymer substrate after the heat-treatment process.

The application relates to a method for preparing a high-resolution quantum dot light-emitting diode based on a capillary effect driven quantum dot self-assembly, and belongs to the technical field of light-emitting diodes and other light-emitting devices. The high-resolution quantum dot light-emitting diode is prepared in the order of a substrate-hollow injection layer-hollow transmission layer-light-emitting layer-electron transmission layer-metal electrode, wherein the preparation method of the light-emitting layer is as follows: firstly, a strip-shaped groove is formed in a polymer through hot nano-imprinting; quantum dots are deposited into the polymer groove through a solution method; under the driving of a capillary effect, the quantum dots move to the inner wall of the polymer groove and are accumulated into quantum dot strips; after the polymer substrate with the quantum dot array deposited thereon is transferred to the substrate, the substrate is immersed in a hot solvent to remove the polymer, and the light-emitting quantum dot array is left. The method is simple to operate, high in yield, and suitable for large-scale industrial production of high-resolution quantum dot light-emitting diodes.

This invention provides a fast-response hydrogen-sensitive color-changing tape, its preparation method, and its application. The raw materials for preparing the fast-response hydrogen-sensitive color-changing tape, by weight, include the following components: 15-30 parts modified porous polymer substrate, 5-12 parts modified tungsten-based color-changing material, 1-3 parts modified non-precious metal catalytic material, 1-2 parts adhesive additive, 2-6 parts transparent elastic encapsulating resin, and 0.3-0.5 parts stabilizer. The fast-response hydrogen-sensitive color-changing tape provided by this invention not only has a short hydrogen response time and recovery time but also high peel strength.

The invention relates to a foam metal growing on a polymer substrate and a preparation method thereof. Comprising the following steps: 1) a base material preparation stage: mixing a polymer combination and / or an auxiliary agent to obtain a base material; 2) a metal growth stage: performing pretreatment on the surface of the base material obtained in the step 1), and then growing metal in pores of the base material through chemical plating or water electroplating to obtain a polymer base material; (3) a base material dissolving stage: dissolving the polymer base material deposited with the metal obtained in the step (2) to obtain foam metal without the polymer base material; and 4) a post-treatment stage: carrying out anti-oxidation and drying treatment on the foam metal without the polymer base material obtained in the step 3) to obtain the foam metal. According to the preparation method, the high-porosity polymer base material is introduced, so that the metal uniformly grows in pores in the high-porosity polymer base material, and finally, the polymer base material is completely removed to obtain the foam metal.

The present application relates to the field of biological materials, and particularly relates to a ROS / pH dual-response modified type XVII collagen microneedle patch loaded with bioactive substances and application, the microneedle patch is composed of boric acid modified type XVII collagen, bioactive substances and polymer substrate.Boric acid modified type XVII collagen and polyvinyl alcohol are double-crosslinked through physical and chemical levels to form collagen hydrogel, then load bioactive substance insulin-like growth factor, and form ROS / pH dual-response collagen microneedle patch loaded with bioactive substances with polymer substrate.When applied to the skin, the microneedle tip reaches the area where hair follicle stem cells exist in a painless and minimally invasive manner, and due to the change of active oxygen and pH environment in the skin tissue, the borate ester bond in the collagen hydrogel can be broken, thereby removing active oxygen and releasing the wrapped IGF-1 into the hair follicle stem cells.

The invention provides a low-temperature plasma spraying method for a heat-sensitive polymer matrix and a composite material, and belongs to the technical field of surface engineering. According to the method, through a system process of matrix surface pretreatment, spraying powder drying and low-temperature plasma spraying, the core is that a matrix active cooling technology is adopted in the range of 0-10 DEG C to isolate the plasma arc heat influence, and optimized sand blasting coarsening, powder granularity control and spraying process parameters are matched; and the compact Al2O3-TiO2 ceramic coating with high bonding strength is successfully prepared on a heat-sensitive epoxy resin matrix. The limitation that a traditional thermal spraying technology cannot be used for high polymer materials is broken through, the technological process is simple, the cost is low, and the obtained coating is excellent in abrasion resistance and suitable for meeting the requirement for high performance of the surface of the light high polymer material in the fields of electronic equipment, aerospace and the like.

Formulations of each group of graphene, graphene carbon, metal and dielectric ink compatible with each other for making high performance film touch switches (MTSs) are disclosed. The components of these inks are optimized to achieve a higher degree of compatibility with highly engineered polymer substrates, providing an overall solution for manufacturing high performance MTS. These material sets may also be used to fabricate sensors, biosensors, and RFID on flexible substrates such as polymers and paper.

Disclosed is a separator for an electrochemical device. The separator includes a porous polymer substrate, a porous coating layer formed on at least one surface of the porous polymer substrate and including a polymer binder and inorganic particles, and a dopamine coating layer formed on the porous coating layer and including polydopamine and dextrin. The separator has reduced thermal shrinkage even in a high temperature wet state.

The application discloses a kind of based on enhanced raman's trace furfural in oil ultrafast detection method and system, the method includes: preparation regular arrangement metal nanometer finger array on flexible polymer substrate;After depositing dielectric film on the surface of metal nanometer finger, introduce removable sacrificial layer, under the condition with temperature gradient, volatile solvent is applied, adjacent metal nanometer finger gradually approaches contact, metal-dielectric-metal gap structure is formed, so that the enhanced substrate of hotspot uniform distribution is obtained;Transformer oil sample is directly dropped on the surface of the enhanced substrate;Using Raman spectrum system, enhanced raman signal of furfural molecule in the oil sample is collected under laser excitation;According to the enhanced raman signal, the characteristic peak of furfural in transformer oil is identified.The application can realize in-situ, high-sensitivity, rapid, non-destructive detection of trace furfural in transformer oil without extraction and adsorption.

The present disclosure provides a stretchable article. The stretchable article includes a polymeric substrate configured to have a planar unstretched state and a non-planar deformed stretched state. When the polymeric substrate is in the planar unstretched state the polymeric substrate includes a sheet having a first major surface; a second major surface opposite the first major surface; and a plurality of slits that each extend from the first major surface to the second major surface. The plurality of slits are arranged in a Kirigami pattern, which includes at least one feature that is smaller than 500 micrometers. Additionally, a method is provided, including forming a plurality of slits in a polymeric substrate using a microstructured cutting tool.

The invention relates to a multi-metal zinc complex, a preparation method and application in polymer depolymerization. The multi-metal zinc complex forms a stable coordinate bond with an organic ligand molecular skeleton, shows excellent chemical stability and substrate adaptability, and can efficiently catalyze the depolymerization reaction of various polymers in a temperature range of 100-250 DEG C. In addition, the ligand framework has adjustability, polymer substrates with different compositions and structures can be optimized, and high-yield recovery of various types of monomers is realized. The catalytic system has wide applicability, can catalyze the bulk depolymerization of the polymer, and also can catalyze the depolymerization in the presence of a nucleophilic reagent. Through a multi-metal concerted catalysis mechanism, the dosage of the catalyst is remarkably reduced, various polymers with the number-average molecular weight in the range of 3.8-807.5 kg / mol can be depolymerized, the depolymerization reaction time is 0.5-24.0 h, side reactions are remarkably inhibited, and excellent industrial application prospects are shown.

The invention discloses a secondary battery, a battery pack and electric equipment, and belongs to the technical field of batteries. The secondary battery comprises at least one battery cell, the at least one battery cell comprises a positive pole piece, a negative pole piece and a diaphragm arranged between the positive pole piece and the negative pole piece, at least one of the positive pole piece and the negative pole piece comprises a composite current collector, and the composite current collector comprises a polymer base material layer and a conductive layer, the polymer base material layer comprises a polymer base material and a thermal decomposition additive, the thermal decomposition additive generates gas when reaching a decomposition temperature, and the conductive layer is arranged on the polymer base material layer. According to the present invention, the thermal decomposition additive is introduced into the composite current collector, such that the gas can be generated when the battery is locally overheated, the high pressure can be formed in the composite current collector, the composite current collector is caused to swell and even fracture, the short circuit or the open circuit can be formed in the cell, the thermal runaway occurrence possibility is reduced, and the safety of the secondary battery is improved.