631 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.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

The invention relates to the technical field of film material preparation, and discloses a polylactic acid antibacterial packaging film and a preparation method thereof, the polylactic acid antibacterial packaging film comprises the following raw material components by weight: 60-80 parts of polylactic acid, 10-20 parts of polyvinyl alcohol, 10-20 parts of nano zinc oxide, 0.5-1.5 parts of nano cellulose, 1-3 parts of an antibacterial agent, and 10-15 parts of corn starch; the antibacterial agent is prepared from the following components in parts by weight: 5-10 parts of carboxymethylated chitosan and 0.5-2 parts of a dynamic disulfide bond cross-linking agent, the substitution degree of the carboxymethylated chitosan is greater than or equal to 80%, the antibacterial agent is prepared from tea tree essential oil and eugenol, and the dynamic disulfide bond cross-linking agent is bis (3-aminopropyl) disulfide. By adopting a composite system of carboxymethylated chitosan and a dynamic disulfide bond cross-linking agent, the technical effects of humidity-triggered self-repairing and mechanical property synergistic improvement are achieved, and compared with a packaging film with a single polymer base material in the prior art, the problem of antibacterial failure caused by mechanical damage is solved.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

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 provides a multifunctional passive cooling optical metamaterial fiber, yarn and fabric and a preparation method thereof. The passive cooling optical metamaterial fiber is composed of high-refractive-index inorganic micro-nano particles and / or a micro-nano functional material and a polymer substrate material. Wherein wavelength / sub-wavelength scale micro-nano particles are uniformly distributed in a substrate material as a random scattering medium to form a random optical metamaterial system, and reflection enhancement of the optical metamaterial fabric in a solar spectrum band is realized by utilizing a multiple Mie resonance collective effect. According to the passive cooling optical metamaterial fiber, a circular structure, a skin-core structure and the like are prepared through melt spinning, high-refractive-index inorganic micro-nano particles are added into a skin layer and used for sunlight band wide spectrum regulation and control, and a micro-nano functional material is added into a core layer, so that multiple functions are effectively achieved.

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 invention discloses a method for preparing a high-safety composite lithium metal negative electrode and a negative electrode interface-derived solid-state battery. The high-safety composite lithium metal negative electrode is composed of lithium metal, metal X and a polymer substrate film. The polymer substrate film is a polymer film modified with polar functional groups. There is a strong interaction between the polar functional groups and the metal layer X, which acts as a molecular welding agent to anchor the metal layer. The lithium metal and the metal layer X spontaneously form an alloy layer, thereby obtaining a chemically connected multilayer composite lithium metal negative electrode, which helps to improve the problem of mechanical pulverization of lithium metal during long-term cycling. The present invention proposes an innovative solid-state battery preparation strategy. Through the catalytic action of the alloy compound, the formation of a solid electrolyte is directly promoted on the negative electrode side, thereby achieving a close combination of the negative electrode and the solid electrolyte interface. By optimizing material selection and preparation process, the present invention can further improve the performance of solid-state batteries and meet the growing demand for energy storage.

Disclosed is a separator for an electrochemical device, the separator including a porous polymer substrate and a porous coating layer formed on at least one surface of the porous polymer substrate. The porous coating layer contains a polymer binder, inorganic particles, and an organic filler, the polymer binder being contained in an amount of 1 to 10 parts by weight based on the total weight of the porous coating layer, and the inorganic particles have a packing density of 2 g / cm3 or more to 2.5 g / cm3 or less.

A separator for an electrochemical device having a porous polymer substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous polymer substrate. The porous coating layer includes a dispersing agent, a mixture of inorganic particles and a particle-type binder polymer, and a polyvinyl pyrrolidone binder polymer positioned on the whole or a part of the surface of the inorganic particles in the mixture of the porous coating layer to connect and fix the inorganic particles with one another. The content of the polyvinyl pyrrolidone binder polymer is 2 to 20 parts by weight based on 100 parts by weight of the total content of the particle-type binder polymer and the polyvinyl pyrrolidone binder polymer.

The invention belongs to the technical field of electronic packaging materials. The invention relates to the field of electronic packaging, in particular to a flexible high-barrier film for electronic packaging and a preparation method thereof. The preparation method comprises the following specific preparation steps: substrate activation: activating the upper surface and the lower surface of a polymer substrate to regulate the surface energy of the two surfaces to be greater than or equal to 50mN / m respectively, so as to obtain an activated substrate; coating an organic buffer layer: coating a water-based organic coating on the two surfaces of the activated substrate, and curing and forming to obtain the organic buffer layer with the water content of 15-20%, the thickness of 10-15 microns and the roughness Ra of 0.08-0.12 microns; depositing an inorganic layer: pulse gaseous trimethylaluminum and tetraethoxysilane mixed gas on the surface of the organic buffer layer, then pulse with water vapor, and circulating the pulse so as to deposit the inorganic layer with the thickness of 15-20nm on the surface of the organic buffer layer; and stacking and packaging: stacking the organic buffer layer and the inorganic layer for 8-10 cycles, then covering the organic buffer layer and the inorganic layer with a UV curing adhesive, and annealing to obtain the flexible high-barrier film for electronic packaging.

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 relates to the technical field of surface resistance reduction, in particular to a resistance reduction structural member with a surface microstructure and a preparation method and application thereof, which can effectively prolong the residence time of bubbles and an air film on a resistance reduction surface so as to reduce the loss and deterioration of resistance reduction performance. A resistance reduction structural member with a surface microstructure comprises a first polymer substrate and a plurality of protrusions arranged on the surface of the first polymer substrate in a protruding mode, and each protrusion comprises a second polymer substrate and nanoparticles arranged on the surface of the second polymer substrate in a protruding mode; wherein the nanoparticles at least comprise hydrophobic nanoparticles, and the outer contour of the second polymer substrate is a spherical surface.

The invention belongs to the technical field of lithium batteries, and particularly relates to a composite ceramic solid electrolyte diaphragm material and a preparation method and application thereof. Wherein the lithium ion conductor filler is LLZTO (lithium zinc oxide) nano particles coated with polydopamine; the mass dosage of the polydopamine is not more than 2 times that of the LLZTO nanoparticles, and the thickness of a coating layer formed by the polydopamine is less than 10nm. Compared with the prior art, the problems of dispersity and contact of nano solid electrolyte particles in a polymer substrate in the prior art are solved. According to the scheme, the contact interface of LLZTO nanoparticles and PVDF-HFP is optimized by introducing the interface layer and particularly utilizing the bidirectional cohesiveness of polydopamine, and the distribution of the nanofiller in a polymer is improved.

A composite copper-based current collector and a preparation method therefor, and a lithium ion battery, relating to the technical field of battery materials. The composite copper-based current collector comprises: a polymer substrate film; and a modified copper layer arranged on at least one surface of the polymer substrate film, wherein the modified copper layer comprises a C-Cu heterogeneous microstructure with dispersed carbon quantum dots. Carbon quantum dots are introduced, and the carbon quantum dots are uniformly dispersed in copper grains and at copper grain boundaries, thereby forming the C-Cu heterogeneous microstructure with dispersed carbon quantum dots; the presence of the carbon quantum dots can exert resistance to grain coarsening, thereby inhibiting grain coarsening and promoting grain refinement, improving the tensile strength of the composite copper-based current collector; the C-Cu heterogeneous microstructure can enhance dislocation storage capacity and strengthen strain hardening, thereby improving the elongation at break of the composite copper-based current collector; and improvements of the tensile strength and the elongation at break jointly enhance mechanical properties of the current collector, and improve the stability of the current collector in the battery.

The invention relates to the technical field of polymer composite materials. The invention provides a polymer composite material capable of continuously releasing negative ions. The polymer composite material is mainly prepared from the following raw materials in parts by weight: 75-90 parts of a base material, 3-15 parts of functional composite powder, 2-8 parts of a release auxiliary agent, 3-8 parts of an attenuation compensation composite auxiliary agent and 1-2 parts of other auxiliary agents. The invention also provides a preparation method of the polymer composite material capable of continuously releasing negative ions. Based on the same inventive concept, the invention also provides application of the polymer composite material capable of continuously releasing negative ions in the fields of air purification, medical care, thermoplastic elastomer product preparation, textile preparation and plastic product preparation. A microcosmic channel release mechanism and an attenuation compensation mechanism are formed on a series of polymer base materials by adopting a plurality of composite functional powders and a plurality of composite components, so that the prepared polymer composite material achieves the outstanding effect of continuously releasing high-concentration negative ions in air.

This invention relates to the production of integrated optical waveguides on the surface of planar polymer substrates (polymer chips) using UV laser lithography. The resulting optical waveguides are multilayer optical waveguides that, when light is guided in the lower part of the optical waveguide, form radiation modes. As a result, light energy is radiated from the underside of the optical waveguide into the volume of the polymer substrate, so that it is lost to the actual light guide.Since the associated attenuation losses are usually undesirable, two different partial solutions are presented, which can then be combined to suppress the unwanted radiation modes as completely as possible. A parameter window for the UV laser lithographic production of polymeric, integrated-optical (planar) optical waveguides is presented, which is located shortly before the UV photon-induced carbonization (discoloration) of the irradiated zone of the optical waveguides to be produced. Due to the thermal effect of the incident high-energy UV excimer laser radiation, a change in the refractive index depth profile within the irradiated zone occurs above a certain radiation dose, so that no more radiation modes can form there.As a further solution, polyacrylate layers are produced by spin-coating and subsequently curing acrylate layers on a carrier substrate. These layers are too thin for radiation modes to form on the underside of the optical waveguides produced by subsequent UV exposure.

The present application discloses a nano-microcapsule-based heat-insulation masterbatch and a preparation method therefor. The nano-microcapsule-based heat-insulation masterbatch is prepared by mixing organic and inorganic composite nano-microcapsules with a polymer matrix material and adding an auxiliary agent for granulation, wherein the addition percentage of the nano-microcapsules is 1-20 wt%, the addition percentage of the auxiliary agent is 0.2-0.5 wt%, and the balance is the polymer matrix material; and the nano-microcapsules are prepared by means of emulsification pre-polymerization, polymerization, and nano-compositing. Compared with conventional heat-insulation masterbatches, the masterbatch has outstanding stability, and higher heat-insulation properties and heat preservation performance.

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.

The invention belongs to the technical field of super-hydrophobic materials, and particularly relates to a photo-thermal super-hydrophobic anti-icing coating and a preparation method thereof. The photo-thermal super-hydrophobic anti-icing coating comprises a heat absorption polymer substrate and a super-hydrophobic particle layer located on the surface of the heat absorption polymer substrate. The heat absorption polymer substrate is prepared from resin and filler, and the super-hydrophobic particle layer is composed of super-hydrophobic particles. The photo-thermal super-hydrophobic anti-icing coating has good hydrophobic, anti-icing and deicing capacities, meanwhile has excellent mechanical strength and elasticity, and can enhance the wear resistance and prolong the service life of a substrate. In addition, the preparation method of the coating is controllable in process, the prepared product is stable in quality, and the preparation method is suitable for large-scale industrial production.

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 invention discloses an organic-inorganic composite solid electrolyte and a preparation method and application thereof, the organic-inorganic composite solid electrolyte comprises an inorganic ceramic filler, a polymer substrate and a sodium salt; the inorganic ceramic filler is a filler formed by grafting a diamino polyethylene glycol short chain after coating sodium zirconium silicon phosphorus oxide with polydopamine; the polymer substrate is a mixture of polyethylene glycol and polyvinylidene fluoride. The preparation method comprises the following steps: dissolving the polyethylene glycol, the polyvinylidene fluoride, the inorganic ceramic filler and the sodium salt in a solvent to obtain a mixed solution, coating a base material with the mixed solution, and then performing vacuum drying to obtain the organic-inorganic composite solid electrolyte. The organic-inorganic composite solid electrolyte disclosed by the invention has relatively high ionic conductivity, good mechanical property and relatively good interface stability.

The invention belongs to the technical field of composite films, and particularly relates to a super-soft, electricity-conducting and heat-conducting film electrode and a preparation method thereof. The preparation method comprises the following main preparation steps: firstly, preparing a single-layer boron nitride nanosheet BNNS from a two-dimensional heat conduction material hexagonal boron nitride BN through an ultrasonic stripping technology, and then carrying out hydroxylation treatment on the BNNS to form a hydroxylated boron nitride nanosheet HO-BNNS; the preparation method comprises the following steps: mixing a HO-BNNS aqueous solution with a silver nanowire (AgNWs) or copper nanowire (CuNWs) aqueous solution, mixing with a polyvinyl alcohol (PVA) polymer substrate material to form a uniform dispersion liquid, pouring the mixed solution on the surface of a prefabricated metal nanowire thin film electrode (a substrate can be a flat substrate such as a PET flexible polymer or a silicon wafer rigid substrate), and performing high-temperature curing to obtain the metal nanowire thin film electrode. And finally, the cured film is peeled off from the substrate, so that the super-soft film electrode with excellent electric conduction and heat conduction performance is prepared, and the film can be repeatedly folded and has super-flexibility.

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.