55 results about "Thermosetting polymer" patented technology

The present application relates to a method for preparing a thermosetting midsole using foamed particles with graphene oxide on surface. The method comprises: fusing the foamed particles with graphene oxide on surface with each other in a midsole mold under steam heating conditions to form the thermosetting midsole, wherein the body of the foamed particles with graphene oxide on surface is formed by mixing 60 wt % to 95 wt % thermoplastic polyurethane and 5 wt % to 40 wt % thermosetting polymer and foaming under non curing conditions. Thermosetting midsoles have high mechanical strength, good thermal stability, good chemical resistance, and good breathability, making them suitable for outdoor and extreme environments. The graphene oxide on the surface of the foamed particles prevents the foamed particles from fusing with other foamed particles where graphene is present, thus naturally leaving breathable channels.

The invention relates to a flow polarization process for improving the polarization efficiency of a ceramic / polymer-based piezoelectric composite material, and belongs to the technical field of flexible piezoelectric composite materials. Piezoelectric nanorods selected by the composite material are consistent in electric dipole orientation under a mesoscale (can be prepared by a molten salt method, a hydrothermal method or an electrostatic spinning method), a thermosetting polymer is used as a matrix (such as polydimethylsiloxane, thermosetting epoxy resin and the like), and polarity orientation of piezoelectric filler in the polymer matrix is regulated and controlled by means of electrophoresis, so that the piezoelectric composite material is obtained. The orientation of the electric dipoles of the material is consistent under the macroscopic scale, the material is firstly polarized and then molded, and the polarization efficiency of the material is remarkably improved.

Processes, foams, foamable compositions, and blowing agents related to thermoset polymer foam compositions comprising an active hydrogen-containing compound; and a blowing agent comprising HFO-1252zc and optionally HFC-152a.

This application discloses a battery device, an electrical device, and a method for manufacturing the battery device, relating to the field of flexible circuit board technology. The battery device includes a housing, a battery cell, and a flexible circuit board assembly. The battery cell is housed within the housing. The flexible circuit board assembly includes a target flexible circuit board and a flexible circuit board protective structure. The target flexible circuit board is electrically connected to the battery cell. The flexible circuit board protective structure is attached to the target flexible circuit board. The flexible circuit board protective structure includes a carbon fiber layer, a thermal expansion coefficient control layer, and a first flexible buffer layer. The thermal expansion coefficient control layer is disposed on the carbon fiber layer and is made of a thermosetting polymer material or a thermosetting inorganic reinforced composite material. The first flexible buffer layer is disposed on the carbon fiber layer and is made of an elastic material. This solution can reduce the warping of the flexible circuit board and improve its flatness and reliability.

This invention discloses a polyester membrane comprising: multiple channels spaced apart within the polyester membrane, each channel including a closed chamber; a mixed flame-retardant liquid filled within the chamber, the mixed flame-retardant liquid comprising a free radical scavenging material and a thermal transition material, the thermal transition material comprising a thermosetting polymer and / or a thermo-induced phase change substance; when preset conditions are met, the polyester membrane ruptures, and the mixed flame-retardant liquid flows out from the chamber. The free radical scavenging material is used to block the combustion reaction, and the thermal transition material is used to form a physical barrier layer. The preset thermal runaway emergency condition corresponds to the condition when the battery cell has a risk of thermal runaway. The mixed flame-retardant liquid can be rapidly released based on the preset conditions, achieving combustion reaction blocking through free radical scavenging, combined with the physical barrier effect, effectively curbing the spread of thermal runaway and significantly improving the safety protection level of the battery cell. This invention also discloses a lithium-ion battery.

The invention relates to a method for manufacturing a blade or vane made of composite material, comprising: - obtaining (E10) an insert, comprising the production of a fibrous stack having a predetermined fibrous orientation by an automatic fiber placement technique, the composite insert comprising said fibrous stack impregnated with a thermosetting polymer, - obtaining (E12) a porous fibrous reinforcement obtained by three-dimensional weaving and having a disconnection defining two disconnected fibrous portions, - obtaining (E20) a fibrous assembly by introducing the insert inside the porous fibrous reinforcement, the insert thus introduced giving its shape to the reinforcement, - introducing (E30) a thermosetting resin into the porous fibrous reinforcement after the fibrous assembly has been obtained, and - co-curing (E40) the thermosetting resin thus introduced with the thermosetting polymer.

An ecological insulation board based on natural fibers comprises at least one core layer. The core layer is prepared from the following components in percentage by weight: 65 to 75 percent of natural fiber, 20 to 30 percent of bio-based resin, 1 to 5 percent of flame retardant and 3 to 10 percent of filler. The core layer in the ecological insulation board takes the natural fibers as a structural framework, and proper bio-based resin is selected, so that the bio-based resin is required to be capable of fixedly bonding the fibers together and also required to be capable of penetrating into the surfaces of the fibers and cross-linking with the fibers to form a chemical modifier. The chemical cross-linking reaction inside the bioresin system can prevent warping and layering, forming a durable thermosetting polymer network. The fibers and the surface layer are anchored together through the networks, and even under different heat or humidity conditions, very high adhesive strength, dimensional stability and moisture resistance can be generated.

Lightweight composite panels, compositions used to make composite panels, and methods for manufacturing composite panels. The composite panels include a lightweight foam core sandwiched between thin protective layers (e.g., fiber reinforced cementitious layer, thermoset polymer layer, e.g., polyurea or polyaspartic, or magnesium oxide). Lightweight composite panels can be used in place of conventional wallboards and panels, including for various uses such as interior drywall, backerboard for tile and other interior finishes, including those exposed to moisture, exterior sheathing, floor underlayment, soffits, roofing decks, shaft liners, and the like. Lightweight composite panels can be cut, drilled, and screwed onto structural elements of buildings, such as wall frames comprising wooden or metal studs, roof frames comprising boards, studs, or trusses, floor joists, concrete floors, foundations, and the like. Exterior sheathing panels can include a drainage layer and / or a factory installed finish. Interior panels that replace gypsum boards can include a plaster layer.

The present disclosure provides a polymerizable thermosetting composition comprising an acetylene-bearing benzoxazine compound and a phthalonitrile monomer. The composition can provide a low viscosity for RTM application and can fully cured at a much lower temperature than the phthalonitrile monomer. The cured thermoset polymers having excellent thermal and mechanical properties, such as high thermal stability, heat resistance, high char yield, and enhanced structural rigidity.

According to the invention, a new concept is introduced into additive manufacturing (AM), namely remote printing can be carried out without directly accessing a printing position. Energy sources commonly used in AM, such as heat and light, have weak penetrability in optically opaque media. However, the present invention introduces a method of deep penetration of print media by using acoustic waves. The acoustic mode creates a chemically active region in the printing material, causing the printing material to cure. The printing material may be a thermoset polymer or a polymer composite. According to the concept, a new paradigm for non-invasive / minimally-invasive biological printing in the human body is created, an operation is not needed, and the concept passes experimental verification in the patent. In addition, a new concept of printing under a firm and opaque shell is introduced, the concept has industrial application value and is particularly suitable for the aerospace field, and the generated size is smaller than the size which can be achieved at present.

The invention discloses a multifunctional curing agent as well as a preparation method and application thereof, and belongs to the field of flame-retardant curing agents. The structure of the curing agent contains piperazine rings and phosphorus elements at the same time, and a phosphorus-nitrogen synergistic flame-retardant effect can be achieved. The structure of the flame retardant has imino groups, so that the flame retardant can play a role of a co-curing agent when being applied to thermosetting polymers such as epoxy resin and the like. When applied to epoxy resin, the multifunctional curing agent has very high flame-retardant efficiency, the limit oxygen index of the prepared epoxy resin material is obviously improved, the vertical combustion reaches V-0 level, the prepared epoxy resin material has excellent tensile property and impact resistance, the dielectric constant and dielectric loss of the cured epoxy material are reduced, and the service life of the epoxy resin material is prolonged. Meanwhile, the moisture resistance and the heat conductivity of the cured epoxy material are improved.

Lightweight composite panels, compositions used to make lightweight composite panels, and methods for manufacturing lightweight composite panels. The lightweight composite panels include a lightweight foam core sandwiched between thin protective layers selected from fiber mesh reinforced cementitious layer and thermoset polymer layer, e.g., polyurea or polyaspartic. The lightweight composite panels can be used in place of conventional wallboards and panels, including for various uses such as interior drywall, backer boards for tile and other interior finishes, including those exposed to moisture, exterior sheathing, floor underlayment, soffits, roofing decks, shaft liners, and the like. The lightweight composite panels can be cut, drilled, and screwed onto structural elements of buildings, such as wall frames comprising wooden or metal studs, roof frames comprising boards, studs, or trusses, floor joists, concrete floors, foundations, and the like. Exterior sheathing panels can include a drainage layer and / or a factory installed finish.

The invention discloses an intrinsic flame-retardant recoverable thermosetting polymer foam material and a preparation method thereof, and belongs to the technical field of thermosetting polymers. The material is prepared by taking an epoxy resin monomer, a pre-curing agent, thermal decomposition type phosphate, a foam stabilizer, a nucleating agent and a catalyst as raw materials and adopting a two-step foaming process. At low temperature, the epoxy resin monomer and the pre-curing agent are pre-cured to form an initial cross-linked network so as to regulate and control the viscosity of the system. During high-temperature curing, the thermal decomposition type phosphate is decomposed to generate phosphoric acid and gas, and the gas serves as a foaming gas source; phosphorus hydroxyl groups of phosphoric acid react with epoxy groups to form dynamic phosphate ester bonds, and a dynamic covalent network is constructed. The thermal decomposition type phosphate has triple effects of a foaming agent, a dynamic cross-linking agent and an intrinsic flame retardant. The foam stabilizer and the nucleating agent regulate the pore size of the foam, the catalyst reduces the curing temperature and prevents internal carbonization of the foam, and the prepared material has recoverable and intrinsic flame retardant properties.

The present invention relates to a non-isocyanate polyurea polymer and a recycling method therefor. The polyurea polymer has faster reactivity than conventional polyurea polymers, is environmentally friendly due to not using isocyanate, and can minimize the use of toxic substances. By having various covalent bonds to form a non-isocyanate-based dynamic covalent bond network, various recycling such as reshaping, chemical recycling, and upcycling is possible, and thus the problem of recyclability of thermosetting polymers can be solved. In addition, the polyurea polymer has both mechanical stability and thermal stability, and thus can be widely applied in various industrial fields.

This invention belongs to the field of thermosetting polymer composite material preparation technology, and particularly to graphene-reinforced high-density epoxy composite materials for casting molding and their preparation method. The method uses a two-component epoxy resin system as the continuous phase and graphene as both a functional filler and a reinforcing filler. First, component A and component B are premixed in a specific ratio. Then, graphene is added stepwise and mixed at low speed. Subsequently, a vacuum degassing process is performed, followed by preheating the mold for casting, a second vacuuming process, and step-curing at 80℃ / 140℃. The graphene is preferably one of high-purity multilayer graphene, few-layer graphene, or single-layer graphene, and the addition process can be carried out in two, three, or four steps depending on the number of layers and the difference in bulk density. This method can balance the uniformity of graphene dispersion, slurry workability, product density, and consistent black surface appearance. The resulting products are suitable for electronic packaging, potting compounds, functional structural components, and thermally and electrically conductive castings.

This invention discloses an aerodynamic metamaterial, its preparation method, and its applications. The aerodynamic metamaterial comprises a matrix and a photosensitive gel material; the matrix is ​​a thermosetting polymer; the photosensitive gel material is a wet gel, asymmetrically dispersed in the matrix in the form of fibrous strips. Under heating conditions, the solvent inside the gel material vaporizes and evaporates from the matrix, generating numerous microcracks in situ within the microstructure, becoming permanent physical cavities or structural defects. This drives the overall structure to undergo pre-programmed macroscopic autonomous deformation towards the side with the smaller expansion rate. Subsequently, by lowering the ambient temperature below the glass transition temperature of the polymer matrix, the matrix transforms from a highly elastic state to a rigid glassy state, thereby locking the three-dimensional configuration and endowing the aerodynamic metamaterial with excellent mechanical strength and engineering load-bearing capacity.

An electrostatic precipitator particle collection unit with a particle collecting electrode and a repelling electrode fabricated with static dissipative materials. The static dissipative material may be a polymer, may be a synthetic polymer, and may be a moldable polymer. The electrode plates may be formed from thermoplastic or thermoset polymer.

An article is comprised of a thermoset polymer having a dye sublimation image in a layer attached or integral to a surface of the thermoset polymer, wherein at least a portion of the thermoset polymer is a foam. The foam article may be made by pretreating a thermoset organic polymer foam to a temperature of 100° C. to about 250° C. for a time sufficient to stabilize the thermoset polymer and dye sublimating an image into a layer of the pretreated thermoset foam. The foam article having the dye sublimation image may be used for applications having aesthetic or structural requirements such as railing, decking or fences.

The electrode current collector according to the present invention comprises a first metal layer, a second metal layer provided so as to face the first metal layer, and a polymer resin layer provided between the first metal layer and the second metal layer, wherein the polymer resin layer comprises a first polymer resin layer in contact with the first metal layer and a second polymer resin layer in contact with the second metal layer, and when the first polymer resin layer comprises a thermoplastic polymer material, the second polymer resin layer comprises a thermosetting polymer material.

Composite material for sound absorption, comprising: a thermosetting polymer matrix; a natural lignocellulose fiber as reinforcement; and an industrial waste ash as filler, wherein the thermosetting polymer matrix is ​​present to about 60 wt.%, the natural lignocellulose fiber is in the range of about 20 to about 40 wt.%, and the industrial waste ash is in the range of 0 to about 20 wt.%.

Composite wall panels, compositions used to make composite wall panels, and methods for manufacturing composite wall panels. Composite wall panels include a core composite panel structure and a finish layer at least partially covering at least one side of the core composite panel structure. The core composite panel structure includes a foam core sandwiched between thin protective layers (e.g., fiber mesh reinforced cementitious layer, thermoset polymer layer, and / or magnesium oxide layer). The finish layer can be light-cured, UV-cured, and / or chemical-cured resin that forms a polymer layer. The composite wall panels can be used to replace gypsum drywall panels and are advantageously lighter weight, have beveled edges, and can have a smooth or textured finish layer. The composite wall panels can be cut, drilled, and screwed onto structural elements of buildings, such as wall frames comprising wooden or metal studs or ceiling joists.

This invention discloses a furfuryl alcohol copolymer-coated ammonium polyphosphate and its application in the preparation of flame-retardant composite materials, belonging to the field of flame-retardant materials technology. The invention involves mixing furfuryl alcohol, electron-accepting monomers, crosslinking agents, and initiators with ammonium polyphosphate in a solution, causing furfuryl alcohol, electron-accepting monomers, and crosslinking monomers to precipitate and polymerize on the surface of the ammonium polyphosphate, forming a furfuryl alcohol copolymer-coated ammonium polyphosphate. This furfuryl alcohol copolymer-coated ammonium polyphosphate, as a flame retardant, can be compounded with polyurethane foam, thermoplastic polymers, and thermosetting polymers to prepare polyurethane foam flame-retardant composite materials, thermoplastic flame-retardant polymer composite materials, and thermosetting flame-retardant polymer composite materials, respectively. The furfuryl alcohol copolymer-coated ammonium polyphosphate exhibits good dispersibility in the polymer matrix, good interfacial compatibility, and is easily modified, significantly improving the flame-retardant properties of the composite material while maintaining its excellent mechanical properties.

Compositions and coatings for thin films designed to protect surfaces and windows from environmental abrasion (e.g., sand, dust, and rubbing) that are transparent in visual and infrared wavelengths are disclosed. The compositions comprise thiol-containing copolymers comprising: (1) 10-(3-butyl-2-hexyl-6-(9-mercaptononyl)cyclohexyl) decane-1-thiol; and (2) a multifunctional terminally unsaturated hydrocarbon monomer; wherein (1) and (2) are combined to form a UV curable crosslinked thermoset polymer network and no particulate fillers are added to the composition. The films exhibit a specular transmission of greater than 70% in the visual spectrum at about 400-700 nm, and IR wavelengths at about 4-5 μm, and about 7.5-12 μm when applied to a surface of a substrate in a coating thickness of about 1-500 μm. A method for making the films involving an UV initiated thiol-ene curing mechanism is also provided.

Optical article incorporating a functionalized substrate, functionalizing and manufacturing methods thereof. The invention relates to an optical article comprising a surface-functionalized optical substrate and an optical element deposited on the same, an eyewear comprising this article, a method for functionalizing the substrate and a method of manufacturing this article. The optical substrate (5) is based on a first thermoset polymer and has a first outer surface, and the optical element (10) is based on a second thermoset polymer selected from (meth)acrylate based resins, has a second inner surface and is deposited on the optical substrate (5), the second inner surface being bonded to the first outer surface by covalent bonds at an interface thereof. According to the invention, the first outer surface is functionalized by functional groups comprising a product of a radical crosslinking reaction between the second thermoset polymer and a derivative of an organosilane compound which contains a vinyl or (meth)acrylate end group, and the derivative of the organosilane compound is a basic hydrolyzate thereof, the basic hydrolysate being grafted on the first outer surface to at least partially form said interface.

Composite plaster panels, compositions used to make composite plaster panels, and methods for manufacturing composite plaster panels. Composite plaster panels include a core composite panel structure and a plaster layer applied to and at least partially covering at least one side of the core composite panel structure. The core composite panel structure includes a foam core sandwiched between thin protective layers (e.g., fiber mesh reinforced cementitious layer or thermoset polymer layer). The plaster layer includes reaction products of water, Portland cement, preferably, white cement, calcium carbonate, aluminum oxide, silicon dioxide, cellulose ether, and latex. The composite plaster panels can be used to replace gypsum drywall panels and are advantageously lighter weight, have beveled edges, and can have a smooth or textured plastic layer. The composite plaster panels can be cut, drilled, and screwed onto structural elements of buildings, such as wall frames comprising wooden or metal studs or ceiling joists.

Exterior wall structures or roofing decks include an exterior wall or roof frame and lightweight composite panels fastened thereto as sheathing and / or substrates to which exterior finishes are applied. Lightweight composite panels include a foam core and protective layers formed over and covering the foam core. The foam core may include extruded polystyrene (XPS), other polymer foam material, or inorganic foam material. The protective layers may include a fiber mesh reinforced cementitious composition, thermoset polymer, or other rigid material. Joints between adjacent composite panels are sealed using sealing tape, polyurethane foam, and / or other sealant Lightweight composite panels can be fastened to studs or trusses suing screws, nails, adhesives, and other fasteners known in the art. The exterior wall structure or roofing deck is strong, waterproof, fire-resistant, resists water damage, and facilitates application of different finishes such as stucco, brick veneers, stone and masonry, shingles, roofing tiles, and metal cladding.

This invention discloses a castor oil-based toughened high thermal conductivity material, its preparation method, and its applications. The preparation method includes: grafting isocyanate groups onto the bio-based chemical castor oil using silane coupling agent-amined graphene. The flexible long carbon chains and urethane groups of castor oil can toughen thermosetting polymers, while graphene can provide thermal conductivity. The material prepared by this invention can provide both toughening and thermal conductivity to thermosetting polymers.

The present disclosure describes functional oligomers or functional polymers. The functional oligomers or functional polymers may contain functional groups, e.g., —OH and / or —CHO. The functional oligomers or functional polymers may be obtained from hydrolyzing certain copolymers and may be soluble in commercially available solvents. The copolymers May be thermosetting polymers. The functional oligomers and functional polymers may be useful for recycling thermosetting polymers and may be useful as starting materials for preparing additional oligomers or polymers.

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.

A method of curing a thermoset polymer is disclosed. A thermoset polymer precursor is deposited on a substrate. After the thermoset polymer precursor has been preheated, the thermoset polymer precursor is then exposed to a light pulse from a flash while it is cooled to maintain the average temperature of the thermoset polymer precursor below its maximum operating temperature. After the thermoset polymer precursor has been exposed to the light pulse, the by-product is allowed to dissipate from the thermoset polymer precursor. The light pulse exposure step and the by-product dissipation step are repeated a plurality of times until the thermoset polymer film is formed.