35 results about "Polymer matrix composite" patented technology

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.

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.

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.

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 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.

The utility model relates to pipeline engineering technical field, concretely is a kind of anti-static RTP pipe, including pipe body, the pipe body includes outer layer reinforcing layer, intermediate thermoplastic plastic layer and inner layer conductive coating, the inner layer conductive coating is evenly coated on the inner wall of intermediate layer, the conductive coating is made of carbon nanometer material and polymer matrix composite, the outer layer reinforcing layer adopts glass fiber braided structure.The metal wire net of outer layer in the device is used as electrostatic conduction channel, further guides electrostatic to grounding system, to avoid the generation of electrostatic spark, in addition, clamp connection uses conductive elastic material, ensures the conductive continuity of entire pipeline system, improves the overall anti-static reliability, the outer coating ultraviolet-resistant polyurethane protective layer can effectively resist ultraviolet aging in long-term outdoor use, further delays material aging process, pipeline has higher pressure resistance, corrosion resistance, anti-aging and sealing performance.

The invention discloses a sound insulation coating system, which comprises an impedance matching layer, a coating layer, a coating layer and a coating layer, which are sequentially arranged in a composite manner, and the impedance matching layer is composed of high-density filler and an elastomer composite material and is used for reflecting sound waves to block airborne sound transmission; the damping layer is composed of hollow microspheres and a polymer matrix composite material and inhibits sound transmission of the structure through resonance scattering and viscoelastic energy consumption; the functional layer is composed of a porous sound absorption material and a resin matrix composite material and used for absorbing high-frequency sound waves and providing surface protection, by means of the implementation of the sound insulation board, through gradient impedance matching design, the 125 Hz low-frequency sound insulation index is larger than or equal to 30 dB, the 4 kHz high-frequency sound absorption coefficient is larger than or equal to 0.85, human voice frequency band noise is effectively restrained, and the sound insulation board has certain use value and popularization value.

A composite airfoil for a turbine engine, the composite airfoil having a spar core and a composite wrap that overlies a portion of the spar core. The spar core includes a spar, at least one support body, and a set of polymer matrix composite plies. The set of polymer matrix composite plies includes a first ply facing a pressure surface and a second ply facing the suction surface. The composite wrap overlies a peripheral edge of the spar core or the distal ends of at least the first and second plies of the set of polymer matrix composite plies.

The embodiment of the present application provides a method for determining the deformation of a roll-shaped orthogonal two-way fabric reinforced polymer matrix composite material and related equipment, and the deformation strain energy W of resin can be obtained R , the tensile deformation energy W of fibers under pressure F , and the correction deformation energy W generated by interaction FR The sum of the deformation strain energy W of the resin R , the tensile deformation energy W of the fibers under pressure F and the correction deformation energy W FR is determined as the deformation of the roll-shaped orthogonal two-way fabric reinforced polymer matrix composite material. It can be seen that the present application can determine the deformation of the roll-shaped orthogonal two-way fabric reinforced polymer matrix composite material, which is helpful for the optimization of multiple links such as production, transportation and the like.

The invention relates to magnetic photocatalytic m-poly[EGDMA-1-VIM]@W03 polymer matrix composite particles for use in the treatment of wastewater generated in the textile industry through adsorption and photocatalytic decolorization processes and their production method.

Methods of making a carbon-carbon composite from thermosetting polymer resin include (a) infusing bis-Schiff base resin into a carbon fiber reinforcement to form an uncured resin embedded composite, (b) positioning the uncured resin embedded composite on a substrate under a vacuum enclosure, (c) curing the bis-Schiff base resin at a first elevated temperature under vacuum to form a polymer matrix composite, (d) heating the polymer matrix composite at a second elevated temperature under inert atmosphere to form a porous carbon-carbon composite, (e) re-infusing bis-Schiff base resin into the porous carbon-carbon composite and curing under vacuum at a third elevated temperature to generate a reinfused porous carbon-carbon composite, and (f) heating the reinfused porous carbon-carbon composite at a fourth elevated temperature under inert gas to form the carbon-carbon composite. Further, the second elevated temperature and / or the fourth elevated temperature is less than 900° C.

The invention discloses a dielectric film based on dielectric graphene coating modification, and belongs to the technical field of films. The core is a composite structure of a'graphene core-double-layer dielectric shell layer 'core-shell filler and a polymer matrix, the oxygen content of the graphene core is 5-8 at%, the sheet diameter is 50-200 nm, and the high polarization characteristic is reserved; the inner layer of the double-layer shell layer is a high-dielectric oxide, the outer layer is a high-insulation oxide, and the total thickness is 3-10nm; a core-shell filler is prepared through a sol-gel + ALD fine trimming process, and the core-shell filler is compounded with matrixes such as PVDF / PI and the like to form a film with the filling amount of 2-8 wt%; according to the design, electron tunneling is blocked, electric field distortion is corrected, and performance synergy is achieved, wherein the dielectric constant is larger than or equal to 21.5, the breakdown strength is larger than or equal to 402 kV / mm, the dielectric loss is smaller than or equal to 0.017, the tensile strength is larger than or equal to 56.9 MPa, and the energy density is 12-15 J / cm < 3 >. The contradiction between dielectric enhancement and loss and breakdown strength of a traditional composite material is solved, the method is suitable for high-density energy storage devices, flexible electronic devices and the like, and the technology is compatible with large-scale production.

A polymer composite structure includes a polymer matrix composite material and an oxygen impermeable layer that is coupled to the polymer matrix composite material. The oxygen impermeable layer is configured to resist oxidation in the polymer matrix composite material.

Patterns of conductive material bonded to a porous polymer matrix composite by an adhesive layer are described. The porous polymer matrix composites comprise a plurality of particles interconnected by an open pore network of a thermoplastic polymer. The pattern of conductive material may be located on the side of the adhesive layer opposite the porous polymer matrix or located between the adhesive layer and the porous polymer matrix. Methods of making and using such articles are also described.

A polymer composite structure includes a polymer matrix composite material and a thermal barrier layer that is coupled to the polymer matrix composite material. The polymer composite structure is configured to resist a transient temperature spike in the polymer matrix composite material.

The present application belongs to the technical field of composite material performance detection, and particularly relates to a polymer matrix composite curing degree detection method and system. The present application takes the curing degree data and the temperature rise data point set of the polymer matrix composite sample after heating as training data, and establishes a curing degree detection model based on the machine learning method, taking the temperature rise data point set of the sample to be detected as input and the curing degree of the sample to be detected as output. The temperature change data of the sample to be detected with the same sample morphology and the same heating condition is input into the curing degree detection model, so that the curing degree of the sample to be detected can be obtained, and the rapid analysis and judgment of the curing degree of the polymer matrix composite material are realized. The method is low in cost, high in efficiency, and suitable for industrial batch detection application.

A method of manufacturing fiber-reinforced polymer matrix composite material bone screws having threads surfaced with a metallic outer layer is described. In some embodiments, the method includes preparing a metallic outer layer by 3-D printing, inserting a composite material into the metallic outer layer, and attaching the metallic outer layer onto the composite material.

Polymer matrix composite joints include a first contact area of a first polymer matrix composite structure, a second contact area 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 sized and shaped based on the first contact area and the second contact area. The resistive film heating element for joining the first polymer matrix composite structure and the second polymer matrix composite structure at the first contact area and the second contact area using a resistive welding process. Systems for processing polymer matrix composite joints and methods for processing polymer matrix composite joints are also disclosed.

The present application relates to the technical field of heat-conducting functional composite materials, in particular to a three-dimensional fabric reinforcement, a preparation method thereof and a polymer-based composite material. The three-dimensional fabric reinforcement provided by the present application has a three-way orthogonal structure, wherein the in-plane is X direction and Y direction, and the thickness is Z direction, and the X direction, Y direction and Z direction all have continuous fiber distribution; the Z direction uses Z-directional fibers coated with a polymer layer; the carbon fibers include mesophase pitch-based carbon fibers and / or high model polyacrylonitrile carbon fibers. The present application coats the surface of the carbon fibers with a polymer layer, which can increase the toughness of the carbon fibers, solve the problem of easy broken yarn and fuzz in the weaving process of high model carbon fibers, ensure the continuity of the carbon fibers and efficient conversion of the heat-conducting and electric-conducting properties when preparing the composite material; the three-dimensional fabric reinforcement is used as a preform to prepare a polymer-based composite material, and the heat-conducting and electric-conducting properties in the thickness direction and the interlayer performance are obviously improved.

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.

The application provides a sizing agent for quartz fibers, a preparation method and application, and relates to the technical field of preparation and application of polymer compound compositions. The preparation method is a preparation process of "aromatic dianhydride pretreatment + special polycondensation treatment + mixing treatment of polyamide acid salt, tertiary amine and functional additives according to a specific ratio", and can stably prepare the sizing agent for quartz fibers; the whole preparation process is a full aqueous system, the functional additives can be completely volatilized at high temperature, and there is no residue, so that the sizing agent has the characteristics of environmental friendliness and high performance. The obtained sizing agent for quartz fibers has extremely high molecular weight and temperature resistance potential, and the glass transition temperature is above 300 DEG C. When the sizing agent is applied to the sizing treatment of quartz fibers, a high-performance protective layer which can resist high temperature above 350 DEG C can be formed on the surface of the quartz fibers, the long-term working temperature and the processing stability range of the quartz fiber reinforced polymer matrix composite are widened, and the application prospect is wide.