91 results about "Polymer matrix composite" patented technology

Various products, systems, and parts or components of such products and systems include a binder matrix (such as a polymer matrix) reinforced with carbon fibers and graphene particles. Inclusion of the carbon fibers and graphene particles substantially improves mechanical strength and utility of the resulting parts, components, and corresponding products and systems. The improvements facilitate substantial advances in various practices of fabrication using additive manufacturing techniques, which lend to applications in biomedical, industrial, agricultural, mechanical, energy generation, transmission, and storage, military, transportation, recreational, and other fields. The inventive materials are particularly well suited for manufacturing of parts for terrestrial vehicles, manned or unmanned aerial vehicles, and space-borne vehicles. Substantial improvements to mechanical strength are achieved even at very low levels of graphene loading (e.g., at about 0.1 wt %), such that the resulting products are substantially stronger than corresponding products lacking said graphene loading, while yet having substantially the same mass.

A polymeric cartridge subassembly for use in medium caliber weaponry, comprising a metallic base having a rearward surface, an open forward surface, and a coupling element therebetween. A polymeric casing is mated with the base coupling element via a coupling end, and includes a forward end opening, an opposite end, and a middle body portion therebetween. The forward end opening is adapted to receive a projectile, and the coupling end has an outer diameter less than that of the middle body portion to facilitate mating with the base coupling element. The polymeric casing is formed from a graphene-reinforced polymer matrix composite which is light-weight; producing necessary ballistics for medium caliber ammunition without deformation of the polymeric casing after firing.

The invention relates to the field of electromagnetic functional composite materials, and particularly discloses a multi-layer composite structure flexible frequency selective surface material and a preparation method thereof. The ultra-high molecular weight polymer fiber-reinforced polymer-based composite material thin-film mechanical enhanced band-pass frequency selection array sequentially comprises an acrylic acid polyvinylidene fluoride organic polymer coating environment-resistant layer, a metal oxide organic film isolation layer, an ultra-high molecular weight polymer fiber-reinforced polymer-based composite material thin-film mechanical enhanced layer, a band-pass frequency selection layer and a packaging protection layer from top to bottom, and the band-pass frequency selection layer is a hexagonal / circular ring nested band-pass frequency selection pattern array. The packaging protection layer is formed by printing a conductive coating composed of conductive filler / polymer resin matrix, and the packaging protection layer is an ink coating. The flexible frequency selective surface material has the characteristics of light weight, high strength, salt fog / rain / ultraviolet and other severe environments, frequency selective wave transmission and multiple functions, has good gas barrier property, is beneficial to maintaining the shape of an inflatable hangar made of a skin and ensuring normal operation of radar equipment, and has good practical engineering application value.

Carbon composites, including carbon fibers, are disclosed and exhibit unique, advantageous mechanical properties, including inter laminar shear strength, compression strength, and resistance to forces applied at angles deviating from parallel to the longitudinal axis of the overall fiber. These improvements allow use of less material while conveying improved strength in myriad practical applications, reducing overall financial cost of fabrication, distribution, and practical utilization of resulting products. These advantages are optimized via utilizing inventive fabrication techniques that incorporate carbon filaments into carbon fibers, preferably incorporating carbon filaments including three-dimensional (3D) graphene platelets into said fibers. The filaments mechanically reinforce both individual fibers, as well as compositions including multiple fibers strung together in a single cord, by “crosslinking” the individual fibers with 3D graphene ligands. The combined result of these inventive efforts includes materials exhibiting superior mechanical strength and reduced mass relative to conventional carbon fibers.

The embodiment of the present application discloses a battery and a power consuming device. The battery includes a battery cell having a pressure relief mechanism on a first wall thereof, and a protective plate, which is a polymer matrix composite fiberboard, facing the pressure relief mechanism. The technical solution of the present application can protect the battery case from airflow impact and high temperature melting caused by thermal runaway of the battery, and improve the safety performance of the battery.

The invention relates to an aperture-adjustable porous radiation refrigeration material and a preparation method thereof. The aperture-adjustable porous radiation refrigeration material is prepared by introducing inorganic nanoparticles onto a polymer-based composite material, wherein the polymer matrix composite material is prepared by compounding cellulose acetate and poly (vinylidene fluoride-co-hexafluoropropylene); the material is endowed with a layered porous structure through a solvent-nonsolvent induced phase separation method, and materials with different pore sizes are prepared by adjusting the proportion of a mixed solvent. By adjusting the proportion of the mixed solvent, the size and morphology of the pores can be adjusted, so that the reflectivity of the material to sunlight is enhanced, and the preparation method has a good application prospect.

The utility model provides a pipeline forming die and a pipeline, and belongs to the field of polymer matrix composite materials. The problems that after the inner skin and the outer skin are formed in a split mode, plastic foam sandwich bonding is poor, and the efficiency is low and the cost is high due to a single product and a single mold are solved. A pipeline forming mold comprises an outer mold, a core mold is embedded in the inner side of the outer mold, at least one opening is formed in the circumferential wall of the outer mold, the left outer mold and the right outer mold are connected through a seam mold, and the seam mold is used for forming a locally-reinforced groove in the outer surface of a product; the forming assemblies are arranged at the openings in a one-to-one correspondence mode, and a forming cavity of a formed product is defined by the outer mold, the core mold and all the forming assemblies; the injection hole is formed in the wall surface of one side of the outer mold in a penetrating manner and communicates with the forming cavity; the forming assembly is a blocking mold or a through mold, when the forming assembly is the through mold, the end, close to the core mold, of the forming assembly is connected with the core mold to form a channel, and when the forming assembly is the blocking mold, the forming assembly is used for blocking the corresponding opening. The device is mainly used for forming pipelines.

Carbon composites, including carbon fibers in a binder matrix, exhibit unique, advantageous mechanical properties, including inter laminar shear strength, compression strength, and resistance to forces applied at various angles. These improvements allow use of less material while conveying improved strength in myriad practical applications, reducing overall financial cost of fabrication, distribution, and practical utilization. These advantages are optimized via utilizing fabrication techniques that incorporate carbon filaments into carbon fibers, preferably incorporating carbon filaments and / or graphene platelets into said fibers, and incorporating the composite fibers, filaments, and / or graphene platelets into a binder matrix. The filaments and graphene platelets mechanically reinforce individual fibers, structures including multiple fibers strung together in a single cord, and the binder matrix, by “crosslinking” the individual fibers and / or fibers and binder matrix, e.g., with filaments and / or graphene ligands. The result includes materials exhibiting superior strength and reduced mass relative to conventional carbon fibers in a binder matrix.

The invention relates to a polymer matrix composite joint, a system and a method for treating a polymer matrix composite joint. A polymer matrix composite joint includes a first contact region of a first polymer matrix composite structure, a second contact region of a second polymer matrix composite structure, and a resistive film heating element. The resistive film heating element includes a lignin-based carbonaceous material. The resistive film heating element defines a longitudinal form and is disposed between the first contact area and the second contact area. The resistive film heating element is sized and shaped based on the first contact area and the second contact area. And the resistive film heating element is used for jointing the first polymer matrix composite structure and the second polymer matrix composite structure at the first contact area and the second contact area by adopting a resistance welding process. A system for treating a polymer matrix composite joint and a method for treating a polymer matrix composite joint are also disclosed.

The present disclosure relates to environmentally friendly polymer composites and related methods. A polymer composite structure includes a polymer matrix composite and an oxygen impermeable layer coupled to the polymer matrix composite. The oxygen impermeable layer is configured to resist oxidation in the polymer matrix composite.

Embodiments of the present application disclose a battery and an electrical device. The battery includes: a battery cell provided with a pressure relief mechanism; and a protective plate disposed opposite the pressure relief mechanism, wherein the protective plate includes at least two protective sheets, and the at least two protective sheets are two different polymer matrix composite fiber sheets. The technical solution provided by the present application can protect a box of the battery from gas flow impact and high-temperature melting caused by thermal runaway of the battery, thereby enhancing the safety performance of the battery.

A method, computer program product, and composite patch includes attaching at least a portion of 2D-material flakes to at least a portion of ferromagnetic materials to form heterostructures. The heterostructures may be dispersed in a solvent at a first temperature. The solvent and the heterostructures may be integrated into a polymer matrix composite patch. At a second temperature below Tc, at least the portion of the 2D-material flakes may be adjusted within the composite patch. A polymer matrix of the polymer matrix composite patch may be cured to fix the alignment of at least the portion of the 2D-material flakes in the composite patch at a third temperature below Tc, wherein the composite patch, once cured, operates at fourth temperatures above Tc.

The present disclosure relates to a method for manufacturing a thermally protected polymer composite structure. A method for manufacturing a thermally protected polymer composite structure using a thermal barrier layer, the thermal barrier layer being porous and comprising a tool side surface and a non-tool side surface opposite the tool side surface, the method includes: curing an adhesive onto a non-tool-side surface of the thermal barrier layer to produce a coated thermal barrier layer including a coated surface; and co-bonding a polymer matrix composite to the coated surface of the coated thermal barrier layer.

Embodiments of the present application disclose a battery and an electrical device. The battery includes: a battery cell provided with a pressure relief mechanism; and a protective plate disposed opposite the pressure relief mechanism, wherein the protective plate includes at least two protective sheets, and the at least two protective sheets are two different polymer matrix composite fiber sheets. The technical solution provided by the present application can protect a box of the battery from gas flow impact and high-temperature melting caused by thermal runaway of the battery, thereby enhancing the safety performance of the battery.

The present disclosure provides novel microfiber and graphene reinforced polymer matrix composites and methods of forming them. The disclosed microfiber and graphene reinforced polymer matrix composites exhibit improved mechanical properties such as stiffness, tensile strength, and impact energy absorption.

The embodiment of the utility model provides a shear fatigue test tool for a polymer-based composite material, and relates to the technical field of performance test of composite material fan blade materials. The problem that a composite material fan blade material characteristic detection tool clamp can only provide one-way compression loading is solved. The device comprises an upper equipment connecting structure, a lower equipment connecting structure, a rigid connecting rod, a panel, a base plate, a sample upper chuck and a sample lower chuck, wherein the top end of the rigid connecting rod is detachably fixed with the upper equipment connecting structure; the panel is fixed with the bottom end of the rigid connecting rod, the base plate is fixed with the lower equipment connecting structure, the sample upper chuck is fixed with the panel, the sample lower chuck is fixed with the base plate, and the height distance between the panel and the base plate is adjustable, so that the sample upper chuck and the sample lower chuck do reverse movement in the height direction. In the process of stretching or compressing the rigid connecting rod, the rigid connecting rod can keep the central axis unchanged all the time, so that the sample is prevented from being eccentrically loaded and distorted.

The invention provides a sizing agent for quartz fibers as well as a preparation method and application thereof, and relates to the technical field of preparation and application of compositions of high-molecular compounds. According to the preparation method, the sizing agent for the quartz fiber can be stably prepared through a preparation process of aromatic dianhydride pretreatment, specific polycondensation treatment and mixing treatment of polyamide acid salt, tertiary amine and a functional additive according to a specific ratio; the whole preparation process is a full-water-based system, the used functional additive can be completely volatilized at high temperature, no residue exists, and the characteristics of environment friendliness and high performance are achieved. The obtained sizing agent for the quartz fiber has extremely high molecular weight and temperature resistance potential, and the glass transition temperature of the sizing agent is 300 DEG C or above. When the quartz fiber sizing agent is applied to quartz fiber sizing treatment, a high-performance protective layer capable of resisting the high temperature of 350 DEG C or above can be formed on the surface of the quartz fiber, the long-term working temperature and the processing stability range of the quartz fiber reinforced polymer matrix composite material are widened, and the application prospect is wide.

The invention belongs to the field of material analysis, and particularly discloses a composite material stiffened wallboard three-dimensional thermal response analysis method which comprises the following steps: S1, establishing a composite material thermal response control equation; s2, the corresponding relation between the material density and the field variable is stipulated, and updating of the state variable is defined in a UMATHT subprogram; s3, calling UMATHT and USDFLD user subprograms to simulate thermal response calculation of the composite material under single-side heating, and calculating temperature response and pyrolysis degree of the composite material stiffened wallboard; according to the method, a composite material three-dimensional thermal response control equation set considering a polymer thermal decomposition reaction is established, a composite material thermal response analysis finite element model capable of considering polymer matrix decomposition is established based on secondary development of ABAQUS user subprograms UMATHT and USDFLD, and by calling the subprograms in ABAQUS software, a composite material thermal response analysis finite element model capable of considering polymer matrix decomposition is established. And thermal response analysis of the polymer matrix composite stiffened wall plate with a complex structure can be realized.

A method for forming a graphene-reinforced polymer matrix composite is disclosed. The method includes distributing graphite microparticles into a molten thermoplastic polymer phase; and applying a succession of shear strain events to the molten polymer phase so that the molten polymer phase exfoliates the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along the c-axis direction.

A method for manufacturing a thermally protected polymer composite structure using a thermal barrier layer, the thermal barrier layer being porous and including a tool-side surface and a non-tool-side surface opposed from the tool-side surface, the method including co-bonding an adhesive onto the non-tool-side surface of the thermal barrier layer to yield a coated thermal barrier layer comprising a coated surface, and co-bonding a polymer matrix composite material onto the coated surface of the coated thermal barrier layer.

Non-polymer coupling agent formulations for producing wood polymer composites are provided, the non-polymer coupling agent formulations comprising at least one organic peroxide and a non-polymer bio-based additive, the non-polymer bio-based additive comprising at least one of a bio-based oil or a bio-based acid or a derivative of a bio-based oil or acid. The coupling agent formulations are capable of producing polymer matrix composites with improved strength and aging characteristics. The improved strength can be related to physical properties such as improved stiffness, toughness, or tensile strength. A masterbatch utilizing the non-polymer coupling agent formulations is provided as well as a method of making the masterbatch.

The invention discloses a preparation method of a basalt fiber reinforced fireproof and flame-retardant polymer matrix composite material. Firstly, a resin prepolymer is mixed with a flame-retardant modifier and a promoter to obtain a copolymerized resin prepolymer; then the copolymerized resin prepolymer is dissolved in a mixed solvent of methyl ethyl ketone and N,N-dimethylformamide to obtain a resin sizing solution; then the resin sizing solution is impregnated on the surface of basalt fibers, and after airing for 2 h, drying treatment is carried out to obtain basalt fiber prepregs; then the basalt fiber prepregs are placed in a flat die, and after hot pressing, a basalt fiber reinforced fireproof and flame-retardant polymer matrix composite material is obtained. The process method provided by the invention is simple and efficient, and the composite material has outstanding flame retardancy and structural properties, and is applicable to the field of lightweight and high-strength composite materials with fireproof and flame-retardant requirements such as aerospace, machinery and ships.

A polymer matrix composite comprising a porous polymeric network; and a plurality of functional particles distributed within the polymeric network structure, and wherein the polymer matrix composite has an air flow resistance at 25° C., as measured by the “Air Flow Resistance Test,” of less than 300 seconds / 50 cm3 / 500 micrometers; and wherein the polymer matrix composite has a density of at least 0.3 g / cm3; and methods for making the same. The polymer matrix composites are useful, for example, as filters.

A method for forming a carbon fiber-reinforced polymer matrix composite by distributing carbon fibers or nanotubes into a molten polymer phase comprising one or more molten polymers; and applying a succession of shear strain events to the molten polymer phase so that the molten polymer phase breaks the carbon fibers successively with each event, producing reactive edges on the broken carbon fibers that react with and cross-link the one or more polymers. The composite shows improvements in mechanical properties, such as stiffness, strength and impact energy absorption.

The invention discloses a gamma ray shielding composite material and a preparation method thereof, and belongs to the technical field of shielding materials. The invention aims to solve the problems that the existing radiation shielding material cannot have high shielding property, flexibility, high shape follow-up property, quick and convenient constructability and the like. The composite material is composed of a metal surface layer, a flexible polymer-based composite material shielding layer and a reinforced fiber layer. The metal surface layer is composed of an ultrathin lead film and / or a tantalum film. The flexible polymer-based composite material shielding layer is composed of a flexible polymer material and a shielding filler. The reinforced fiber layer is composed of one or more of a nylon fiber net, a polyethylene fiber net and a polypropylene fiber net. The gamma radiation shielding fabric has the advantages of being good in gamma radiation shielding performance and shape follow-up performance; the flexible polymer matrix composite material shielding layer has the characteristic of good gamma ray shielding performance; the reinforced fiber layer provides excellent mechanical properties, including tensile property and tear resistance, for the novel heterogeneous multilayer radiation shielding composite material.

The present application relates to composite fuselage frames and methods of manufacturing frame fillers and composite fuselage frames. A composite fuselage frame for an aircraft includes a web and a shear tie. The web includes a width and a first thickness. The web forms an arc between a first end and a second end relative to a fuselage. The width extends from an outboard side to an inboard side relative to a skin on the fuselage. A shear tie is disposed on the outboard side of the web between a first mousehole and a second mousehole and the shear tie protrudes from the first thickness of the web. The shear tie has a second thickness that extends along the skin between a first stringer and a second stringer. The second thickness of the shear tie is defined by the first thickness and a second polymer matrix composite layer formed from a first material polymer matrix composite ply that provides a frame filler integrated with a second material polymer matrix composite ply of the first thickness.

A polymeric cartridge subassembly for use in medium caliber weaponry, comprising a metallic base having a rearward surface, an open forward surface, and a coupling element therebetween. A polymeric casing is mated with the base coupling element via a coupling end, and includes a forward end opening, an opposite end, and a middle body portion therebetween. The forward end opening is adapted to receive a projectile, and the coupling end has an outer diameter less than that of the middle body portion to facilitate mating with the base coupling element. The polymeric casing is formed from a graphene-reinforced polymer matrix composite which is light-weight; producing necessary ballistics for medium caliber ammunition without deformation of the polymeric casing after firing.

The present application relates to the field of electromagnetic function composite material, and specifically discloses a kind of multilayer composite structure flexible frequency selective surface material and preparation method thereof, from top to bottom sequentially include: acrylic polyvinylidene fluoride organic polymer coating environment-resistant layer, metal oxide organic film isolation layer, ultra-high molecular weight polymer fiber reinforced polymer matrix composite film mechanics reinforcing layer, band-pass frequency selection layer, encapsulation protective layer, band-pass frequency selection layer is hexagonal / circular ring nested type band-pass frequency selection pattern array, printed by the conductive coating layer formed by conductive filler / polymer resin matrix, encapsulation protective layer is ink coating.The flexible frequency selective surface material of the present application has the characteristics of light weight, high strength, salt spray / rain / ultraviolet and other harsh environment resistance, frequency selection wave transmission multifunction, good gas barrier performance, is conducive to maintaining the shape of air hangar made of skin, ensures the normal operation of radar equipment, and has good practical engineering application value.

Provided herein are polymer matrix composites, articles including the polymer matrix composites, and methods of forming the polymer matrix composites. The polymer matrix composite includes a stitched composite and a hybrid barrier layer incorporated within the stitched composite, the hybrid barrier layer including a thin ply and a nanographene dispersed resin. The article includes a high-pressure composite cryogenic tank including the polymer matrix composite. The method includes positioning a dry thin ply between composite plies, stitching the composite plies to form a stitched preform, dispersing nanographene into the resin, and infusing the stitched preform with the modified resin.

The invention provides a flexible solar wing substrate structure and a preparation process, and belongs to the technical field of spacecraft power supply subsystems. The flexible solar wing substrate structure comprises a polyimide film layer, a flexible circuit board and at least one flexible substrate reinforcing layer made of a fiber reinforced polymer matrix composite material. The components are integrally formed through co-curing, and the flexible circuit board is embedded in the polyimide base material and has the functions of flexibility and circuit communication; the edge of the substrate is pre-bent to form a flexible hinge with a round rod, so that the folding reliability is improved; and a co-cured fiber composite reinforcing sheet can be selectively arranged to enhance the structural strength. The structure is light in weight, thin in thickness and suitable for a large-interval cold and hot circulation space environment, the manufacturing process is remarkably simplified, the size and the mass are reduced, the folding service life of the spacecraft solar wing is prolonged, and the structural stability is enhanced.