220 results about "Polymeric matrix" patented technology

This invention relates to the field of waterproof membrane technology, specifically to a TPO thermoplastic polyolefin polymer composite material. This material is composed of multiple components, including an interface-controlled masterbatch. Its core lies in the process of sequentially hydroxylating, treating with vinyltrimethoxysilane, hydrolyzing and condensing tetraethyl orthosilicate, and treating with octadecyltrimethoxysilane to obtain a surface-functionalized filler, which is then combined with maleic anhydride-grafted polypropylene to form the interface-controlled masterbatch. This design significantly improves the interfacial bonding between the filler and the polymer matrix, enabling the material to maintain excellent mechanical properties, dimensional stability, and low-temperature flexibility even after artificial climate aging, and effectively ensuring the long-term durability and reliability of welded joint areas.

This invention discloses a magnetically controlled end-face protection device for hollow optical fibers and its preparation method. The device includes: a fixed base for fitting and fixing to the periphery of the hollow optical fiber end; a magnetically controlled hollow fiber ring composed of a polymer matrix and pre-magnetized magnetic particles dispersed in the polymer matrix, capable of radial contraction or radial expansion deformation under the action of an external magnetic field; the magnetically controlled hollow fiber ring is disposed on the fixed base and fitted to the hollow optical fiber end, forming a physical barrier to the end face of the hollow optical fiber in the radial contraction state; and a flexible protective layer disposed on the inner wall surface of the magnetically controlled hollow fiber ring. The end-face protection device of this invention can achieve remote reversible protection of the hollow optical fiber end face and zero-power standby.

This application relates to the field of composite materials and discloses a carbon fiber thermally conductive composite material and its preparation method. The composite material includes a thermally conductive layer comprising a first polymer matrix with a longitudinally arranged carbon fiber array along its thickness direction and filling gaps, and an adhesive interface layer disposed on the surface of the thermally conductive layer for bonding external devices. The adhesive interface layer includes a second polymer matrix and sheet-like thermally conductive fillers. Along the direction from near to far from the thermally conductive layer, the angle between the sheet-like thermally conductive filler and the surface of the thermally conductive layer decreases gradually, as does the crosslinking density of the second polymer matrix. By forming a dual-gradient structure of filler angle gradient and matrix crosslinking density gradient in the adhesive interface layer, a directional thermally conductive network is constructed, achieving efficient heat transfer between the external device and the carbon fiber array. Simultaneously, the inner rigid region resists puncture impacts from the carbon fiber ends, while the outer flexible region provides high surface adhesion for bonding the device, enhancing interface reliability.

A microporous membrane is provided comprising 1) an organic polymeric matrix and 2) a particulate filler distributed throughout the matrix. The matrix comprises: a polyolefin component comprising ultra-high molecular weight polyethylene present in the organic polymeric matrix in an amount of 1 to 80 wt%; and an aliphatic polyketone polymer present in the organic polymeric matrix in an amount of 1 to 80 wt%. The particulate filler exhibits a total particle size in the range of 5 to 40 microns, is distributed throughout the organic polymeric matrix, and is present in the microporous membrane in an amount of 10 to 90 wt% based on the total weight of the microporous membrane, as determined by use of a laser diffraction particle size instrument.

The application discloses a multilayer composite solid electrolyte, and belongs to the technical field of solid electrolytes. The multilayer composite solid electrolyte is formed by sequentially stacking a positive electrode side functional layer, an intermediate support layer and a negative electrode side functional layer, wherein the positive electrode side functional layer comprises an inorganic solid electrolyte and a fluorine-containing polymer; the intermediate support layer comprises a polymer matrix, a porous material modified with an anion group on the surface and a lithium salt; and the negative electrode side functional layer comprises a polymer with a strong coordination group and a lithium salt. The application allocates different functions to the functional layers with different compositions and structures through gradient functional design of the solid electrolyte, and comprehensively realizes performance balance and balance of ion conductivity, mechanical strength and interface stability by utilizing the synergistic effect.

This invention discloses a highly flexible fire-resistant electrical cable and its preparation method, relating to the field of electrical cable technology. It includes a conductor layer and, sequentially wrapped around the conductor layer, an insulation layer, a fire-resistant layer, and a sheath layer. The fire-resistant layer is composed of a polymer matrix and phase change microcapsules and ceramicized fillers dispersed within it. Upon heating, the phase change microcapsules undergo phase change and absorb heat before the ceramicized fillers. The phase change microcapsules possess a dual phase change platform. This invention constructs an integrally elastically deformable composite structure through the synergy of a liquid silicone rubber matrix, thin-layer insulation, and flexible fillers. The phase change microcapsules efficiently absorb heat first, significantly delaying internal temperature rise; as the temperature increases, the ceramicized system forms a robust insulation layer, providing long-lasting fire resistance integrity, thus solving the problem in existing electrical cables of simultaneously achieving dynamic bending life and high-level fire resistance integrity.

The application discloses a preparation method of nanocellulose / polyethyleneimine / MIL-101(Cr) composite porous material for efficiently capturing dyes and heavy metal ions in wastewater. First, Cr(NO3)3.9H2O is selected as a metal ion source, H2BDC is selected as an organic ligand, and water is selected as a solvent, and MIL-101(Cr) powder without fluorine is prepared through a hydrothermal synthesis method; then, CNF is selected as a green polymer matrix, PEI is selected as a functional reagent, and MIL-101(Cr) nano-filler is simply complexed with a crosslinking agent to prepare a series of new nanocellulose / polyethyleneimine / MIL-101(Cr) aerogels which are uniform and low in density, can efficiently absorb organic dyes and heavy metal ions in wastewater, and have a synergistic effect on simultaneously absorbing dyes and heavy metal ions in a binary system. The raw materials in the application are derived from biomass, have the advantages of biodegradability and good biocompatibility, and have the characteristics of easy availability, simple preparation method, short operation process, recyclability, environmental protection and economy. The application has a good application prospect in wastewater treatment and other industries.

Embodiments of the present disclosure relates to a composite material, a working stamp, and a preparation method thereof. The composite material includes a polymer matrix, a plurality of SMA nanoparticles, and a plurality of NTE material nanoparticles. The SMA nanoparticles are dispersed in the polymer matrix. The NTE material nanoparticles are dispersed in the polymer matrix. At a first temperature, the composite material is in a cured state and a thermal expansion coefficient of the composite material is zero (0) or near zero. When the composite material is cooled from the first temperature to a second temperature, the composite material spontaneously contracts caused by phase transformation of the SMA nanoparticles.

The application discloses a polymer electrolyte with three-dimensional network fillers and a preparation method thereof, and belongs to the technical field of lithium ion batteries. The application is based on a synergistic design concept of premixed filler guiding in-situ network growth, and hydrolysis of tetraethyl orthosilicate (TEOS) is regulated by formic acid. The premixed nano-SiO2 particles are used as nucleation sites to induce directional growth of SiO2 generated in-situ on the surface of the nano-SiO2 particles and mutual crosslinking, and the fillers form a three-dimensional crosslinked network structure in the polymer matrix. The application overcomes problems of easy agglomeration of fillers, incomplete crystallization inhibition and incomplete crosslinking of a single in-situ growth network due to lack of nucleation sites in a traditional physical blending method, and realizes synergistic enhancement of mechanical strength and ion transmission efficiency.

This invention discloses a method for preparing an ethylene-vinyl acetate copolymer foam material, comprising the following steps: (1) Tea stem pretreatment: The tea stems are pretreated using a physical-chemical pretreatment method. The tea stems are pulverized to 100-300 mesh using a pulverizer. The tea stem powder is then added to a NaOH aqueous solution, allowed to stand, and washed with pure water until pH=7 to remove residual NaOH. The powder is then added to an VTMO aqueous solution, heated and stirred, filtered, and dried to obtain modified tea stem powder for later use; (2) Intensive mixing; (3) Thin-pass milling; (4) Foaming. This invention uses a physical-chemical dual pretreatment method to modify the tea stems, which effectively improves the interfacial compatibility between biomass fibers and the EVA / POE polymer matrix, avoids problems such as fiber agglomeration and uneven cell size during foaming, and ensures the uniformity and stability of the foam structure.

The present disclosure in general relates to the field of biocomposite materials for construction and structural applications (e.g. biomass-enhanced polymeric composites for sustainable construction and thermal insulation applications). The present disclosure is further directed towards a biocomposite material comprising a polymer matrix. The polymer matrix comprises polylactic acid and a plurality of reinforcement particles comprising Prosopis cineraria. The plurality of reinforcement particles are dispersed within the polymer matrix. The present disclosure also relates to a method of manufacturing a biocomposite material comprising a polymer matrix. The method comprises the steps of: obtaining polylactic acid; obtaining a plurality of reinforcement particles comprising Prosopis cineraria; mixing polylactic acid and a plurality of reinforcement particles comprising Prosopis cineraria to form a polymer matrix, wherein the plurality of reinforcement particles are dispersed within the polymer matrix; and molding the polymer matrix to form the biocomposite material.

This invention discloses a purification process for urea production tail gas, belonging to the field of urea production technology. This invention addresses the technical problems of low conversion rate and high ammonia content in exhaust gas during existing urea production processes, resulting in environmental pollution. The purification process for urea production tail gas includes the following steps: S1, carbon dioxide gas at the top of the stripping tower and liquid ammonia at the bottom of the stripping tower are contacted countercurrently to generate ammonium carbamate stripping gas; S2, the ammonium carbamate stripping gas and the mixed gas enter a synthesis tower, where they are condensed at the bottom to synthesize ammonium carbamate liquid; S3, the mixed gas is transferred via a side stream to a reflux condenser equipped with a modified filter membrane for adsorption and purification. The esterification product of 4-pentenoic acid and dextran is used as the polymer matrix; polyvinyl alcohol, propane trimethylol acrylate, and sodium styrene sulfonate are copolymerized to form a primary polymer solution. The primary polymer solution is used to modify the polymer matrix, resulting in the prepared modified filter membrane.

This invention discloses an amorphous / nanocrystalline alloy composite microwave absorbing film with a high bandwidth-to-thickness ratio, which is composed of an absorber and a flexible polymer matrix; the absorber is amorphous / nanocrystalline Fe. 85 The composite filler formed by anchoring SiAl6Cr8 alloy onto nitrogen-doped carbonized kapok fiber is denoted as NCKF / FSAC composite filler; the flexible polymer matrix is ​​waterborne polyurethane, denoted as WPU; the mass ratio of NCKF / FSAC composite filler to WPU is (6:4) to (9:1). Through the creative absorber composition structure, polymer matrix type and mass ratio of the two, the composite absorbing film has achieved the advantages of high bandwidth-to-thickness ratio, excellent flexibility and good thermal stability.

This application relates to a composite solid-state electrolyte and an all-solid-state lithium-ion battery. The composite solid-state electrolyte comprises a polymer matrix, a sulfide inorganic filler, a lithium salt, and an interface modifier in a mass ratio of (40~50):(30~40):(15~20):(1~3). The solution provided in this application can simultaneously solve the technical problems of limited energy density, low ionic conductivity, high interfacial impedance between the positive and negative electrodes and the electrolyte, and short cycle life.

The application discloses a piezoelectric tactile sensor, which comprises at least one first conductive layer containing graphene and one second conductive layer; a programmable shape memory polymer matrix, in which polarizable zinc oxide nanoparticles are dispersed; the programmable shape memory polymer matrix is arranged between the first conductive layer and the second conductive layer, so that the sensor can generate an electric signal under mechanical stress; the programmable shape memory polymer matrix can present at least two different programmed mechanical states under external stimulation, so that the same tactile stimulation applied to the sensor can generate a plurality of different piezoelectric signals, and the different piezoelectric signals correspond to different programmed mechanical states of the programmable shape memory polymer matrix. Meanwhile, a manufacturing method of the sensor and an application thereof are provided; and the application can realize more accurate material identification, defect detection and mechanical parameter estimation.

This disclosure relates to a negative electrode, a battery cell, a battery device, and an electrical device. The battery cell includes a negative electrode, a positive electrode, a separator, and an electrolyte. The negative electrode includes a composite current collector, which comprises a first metal layer, a second metal layer, and a polymer layer, with the polymer layer located between the first and second metal layers. The polymer layer includes a polymer matrix and an inorganic salt hydrate. The polymer matrix has multiple porous structures, and the inorganic salt hydrate is located within these porous structures. The battery cell of this disclosure can effectively reduce the severity of its thermal runaway reaction, thus reducing the occurrence of catastrophic events.

A magnetic field-assisted additive manufacturing (MFAAM) system and method for fabricating anisotropic bonded magnets. The system includes a magnetic field source assembly including a modular Halbach holder, an inner Halbach holder, and a Halbach cylinder configured to provide a magnetic field for aligning magnetic fillers within a polymer matrix during extrusion. The field gradient of the Halbach cylinder is less than 0.0005 T / mm allowing to obtain high print quality in a large magnetic field. To enable high-temperature processing, the assembly incorporates a cooling casing fluidly coupled to a cooling medium. This active thermal management maintains the Halbach cylinder below a threshold temperature while a heated nozzle extrudes the composite material at temperatures sufficient to melt high-performance polymers. The integration of the magnetic source and cooling jacket allows for the precise alignment of magnetic domains in high-viscosity matrices, resulting in 3D-printed bonded magnets with consistent magnetic anisotropy and improved structural properties.

This invention provides an ultra-low content monolayer MoS2 composite fiber based on in-situ coating and masterbatch dilution spinning, and its preparation method, comprising the following steps: dispersing monolayer MoS2 nanosheets containing sulfur vacancies in ethylene glycol solvent to obtain a monolayer MoS2 monomer dispersion; mixing the monolayer MoS2 monomer dispersion with terephthalic acid for esterification and polycondensation reaction to obtain a MoS2 / PET nanocomposite masterbatch; thoroughly mixing the MoS2 / PET nanocomposite masterbatch with PET chips to obtain a mixed masterbatch; feeding the mixed masterbatch into a melt spinning device for melt extrusion and stretching to obtain an ultra-low content monolayer MoS2 multifunctional composite fiber. The ultra-low content monolayer MoS2 can endow the ultra-low content monolayer MoS2 multifunctional composite fiber with broad-spectrum antibacterial ability and extremely high photothermal conversion efficiency, realizing the macroscopic amplification of the two-dimensional material properties in a polymer matrix.

This invention discloses an environmentally friendly plasticizer using modified lignin as a carrier, a rubber composition, and a method for preparing the same, relating to the field of rubber processing technology. The environmentally friendly plasticizer using modified lignin as a carrier, by weight, comprises the following components: 50 parts modified lignin, 25 parts plasticizing active ingredient, 8 parts dispersant, 5 parts anti-aging agent, and 3 parts stabilizer. The modified lignin is a lignin oligomer containing ester, acetyl, and ether cross-linked structures, with a weight-average molecular weight of 800-1200 Da, a dispersion coefficient ≤1.5, and a carboxyl content ≤0.2 mmol / g. This invention successfully overcomes the technical defects of existing plasticizer carriers, such as high toxicity, difficulty in degradation, and poor compatibility with polymer matrices, providing an environmentally friendly plasticizer using modified lignin as a carrier. This technical solution achieves the dual goals of high-value utilization of lignin and greening of the plasticizer product.

The disclosure provides a composite semi-solid electrolyte membrane with carbon-carbon double bond structure and a preparation method, the composite semi-solid electrolyte membrane comprises: a modified polymer matrix, which is obtained by treating polyvinylidene fluoride or its copolymer with a metal hydroxide solution, the treatment forms a carbon-carbon double bond structure on the polymer backbone, and in-situ generates and uniformly disperses inorganic fluoride particles in the modified polymer matrix; reinforcing fibers, which are dispersed in the modified polymer matrix and interweave to form a three-dimensional network skeleton; and additives, which are dispersed in the modified polymer matrix and used to provide lithium ion carriers for the lithium ion battery. The disclosure realizes the synergistic improvement of the ion conductivity, mechanical strength and thermal stability of the composite semi-solid electrolyte membrane by generating carbon-carbon double bond structure and inorganic fluoride through chemical modification and combining with the fiber reinforcement technology, and exhibits good application prospect in the semi-solid lithium ion battery.

An interface article for attenuating electromagnetic frequency radiation includes a multilayer structure having a first layer with a low refractive index and a second layer with a high refractive index. The article includes ceramic fillers, metal fillers, graphite fillers, or combinations thereof dispersed in a polymer matrix. The interface article is adjustable to exhibit a reduction of at least 75% in the reflection of incident electromagnetic radiation at target frequencies of 0.3–100 GHz.

This invention provides an interbody fusion device and its preparation method, comprising: metal endplates symmetrically arranged vertically, with a mesh structure on the surface of the metal endplates, the mesh structure including: a bone mesh on the outer surface of the metal endplates, a coupling mesh on the inner surface of the metal endplates, a metal separator layer fixedly disposed between the bone mesh and the coupling mesh, and a linkage locking seat disposed on the inner surface of the metal endplates; a cable passing through the linkage locking seat on the inner surface of the aforementioned metal endplates; a polymer matrix fixed between the aforementioned pair of metal endplates by the aforementioned shear-resistant structure; a bone graft cavity, which is a cavity jointly formed by the metal endplates and the polymer matrix; and a positioning hole penetrating the aforementioned polymer matrix. This application addresses the technical problems that, with prolonged implantation time, complications such as displacement, coating peeling, settlement, stress shielding, bone resorption in adjacent areas, and delayed inflammatory reactions often occur.

A thermally conductive interface article for attenuating electromagnetic frequency radiation and transferring excess heat energy includes a multilayer structure having a first layer with a low refractive index and a second layer with a high refractive index. The article includes thermally conductive ceramic filler, metal filler, graphite filler, or a combination thereof dispersed in a polymer matrix. The interface article is adjustable to exhibit a reduction of at least 75% in the reflection of incident electromagnetic radiation at target frequencies of 0.3–100 GHz, while possessing a thermal conductivity of at least 2 W / m·K.

The present application relates to the technical field of functional composite materials, and particularly relates to a shielding and heat dissipating material containing graphene and a production method thereof, which comprises a polymer matrix, graphene dispersed in the polymer matrix and optional metal micro / nano particles, the graphene and the metal micro / nano particles are mutually overlapped in the matrix to form a three-dimensional continuous network structure. The present application builds an interconnected three-dimensional network in the material interior through the synergistic effect of functionalized graphene and metal particles, and the network can be used as a channel for fast migration of electrons to realize electromagnetic shielding and can be used as a high-speed path for phonon transmission to realize efficient heat diffusion.

The application discloses a composite polymer electrolyte and a preparation method and application thereof, and comprises a polymer matrix, a lithium salt and a nano filler; the nano filler is a polymer-coated metal organic framework nanoparticle, and the polymer-coated metal organic framework nanoparticle is formed by in-situ polymerization of a polymer on a metal organic framework nanoparticle, and the application has the advantages that a uniform polymer layer can be formed by in-situ polymerization on the surface of the MOFs, the interface compatibility of the MOFs and the polymer matrix is significantly improved, the problems of easy agglomeration, weak interface combination and phase separation of traditional physical blending are solved, and the structural stability of the electrolyte is improved.

The disclosure relates to non-intumescing or non-swelling coating compositions for use as fire-retardant coating on a variety of substrates. The coating compositions include at least one temperature-resistant polymeric matrix component, a fireproof filler material, and a pigment material. Methods and coated articles using the disclosed coating composition are also described.

The application discloses a kind of MXene-polymer composite material and preparation method thereof, preparation method includes the following steps: by mechanical shearing grinding including multilayer MXene particle, polymer material and magnetic nano grinding aid in raw materials, realize the in-situ exfoliation of multilayer MXene, size micronization and composite of raw material, and MXene-polymer composite material is prepared and obtained.The application realizes the in-situ exfoliation of multilayer MXene particle by shearing grinding and the auxiliary action of magnetic nano grinding aid, in the MXene-polymer composite material prepared and obtained, MXene nanosheet can form uniform stable dispersion in polymer matrix, processing and preparation MXene-polymer composite material has good conductivity and electromagnetic shielding efficiency, the method is simple and easy to operate, suitable for large-scale production.

The present invention relates to the fields of chemistry, nanotechnology and materials engineering, and discloses a polymer composite comprising at least one polymer matrix and at least one filler consisting of metal particles. The invention also discloses a method for modulating the properties of a polymer matrix comprising incorporating a filler consisting of metal particles into the polymer matrix. One of the advantages offered by the invention is that of extending the service life of polymers or restoring the properties of a recycled polymer to a state comparable to that of virgin polymer; furthermore, it improves the material's efficiency and cost-effectiveness, resulting in gains in hydrophobicity, weather and UV resistance, and mechanical, thermal and physicochemical properties, thereby expanding its applicability and added value. The invention also describes use of the aforementioned polymer composite and the use of metal particles to restore the properties of a recycled polymer matrix to the virgin state thereof.

This invention discloses a high-performance polymer electrolyte based on a functionalized fluorinated ether diluent and its preparation method, relating to the field of electrochemical energy storage materials technology. The high-performance polymer electrolyte comprises: a polymer matrix, a lithium salt, an organic dispersion solvent, and a functionalized fluorinated ether diluent. By introducing a fluorinated ether diluent with a specific structure, this invention synergistically regulates the crystallization behavior of the polymer matrix and the lithium-ion solvation structure, solving core problems in traditional polymer electrolytes such as low ionic conductivity, poor interfacial stability, and lithium dendrite growth. The resulting electrolyte possesses high ionic conductivity, high lithium-ion transference number, and excellent interfacial stability, making it suitable for high-energy-density lithium metal batteries.