794 results about "Crosslinked polymers" patented technology

The invention relates to a composite solid electrolyte and a preparation method and application thereof. The preparation method of the composite solid electrolyte comprises the following steps: S1, mixing an inorganic filler and a fluorine-containing compound, and reacting at 70-90 DEG C under an acidic condition to obtain an inorganic filler wrapped by a fluorinated layer; then adding a fluorine ion complexing agent and a silane coupling agent for reaction to obtain a modified filler; adding a thermal decomposition type cross-linking agent into the polymer, and carrying out melt blending to obtain a cross-linked polymer; s2, uniformly mixing the modified filler, a cross-linked polymer, a lithium salt and a solvent to obtain a plurality of slurries containing the modified filler with different volume concentrations; and molding the slurry to prepare the composite solid electrolyte. According to the method, the fluorinated layer and the siloxane network are constructed step by step, so that the interface impedance is reduced, and efficient dissociation of the lithium salt is promoted; a three-dimensional network structure is combined, so that the tensile strength is improved; the modified filler is further designed in a gradient manner to improve the lithium ion transference number.

The invention relates to the field of fire resistance, in particular to a composite fiber reinforced refractory brick and a preparation method thereof.The composite fiber reinforced refractory brick is prepared from, by weight, 70-80 parts of mullite, 40-50 parts of quartz, 20-30 parts of alumina, 40-60 parts of magnesium aluminate spinel fine powder, 5-10 parts of silicon carbide powder, 1-5 parts of composite fibers and 0.5-1 part of sodium tetrapolyphosphate; wherein the composite fiber is composed of modified zirconium oxide fiber and magnesium metal fiber. According to the preparation method, zirconium oxide fiber dispersion liquid, hydroxyethyl methylacrylate and N, N-methylene acrylamide are subjected to cross-linking polymerization under the action of a silane coupling agent, an initiator and an emulsifier, macromolecular chains are loaded on the surfaces of zirconium oxide fibers, the macromolecular chains are taken as cross-linking points, the zirconium oxide fibers are mutually linked to form a cross-linked polymer, and the zirconium oxide fibers are uniformly dispersed in the cross-linked polymer. The two-dimensional zirconium oxide fibers are constructed into a three-dimensional network structure, and the modified zirconium oxide fibers are prepared. The composite fiber can significantly enhance the strength and mechanical toughness of the refractory brick.

The invention relates to a modeling method in the field of molecular dynamics, in particular to an automatic polymer full-atom molecular dynamics modeling method, and the polymer modeling process is divided into three core steps: firstly, converting SMILES of a repetitive unit into SMILES of a polymer; secondly, constructing a single-chain structure; and finally, constructing a multi-chain amorphous system. The link of cross-linking reaction needs to be additionally added to the cross-linked polymer. According to the invention, through the built-in DREIDING force field parameters, an input file required by the Lammps molecular dynamics can be directly operated and generated.

A separation membrane, a preparation method therefor and a use thereof in magnesium and lithium separation are provided. The separation membrane includes, in sequence, a base material layer, a porous support layer, a polyamide layer and a modification layer. Cross-linked polymers forming the modification layer has structural units provided by polyphenols and polyamines, at least some of the structural units provided by the polyphenols are connected to the polyamide layer via ortho positions of phenolic hydroxyl groups. The preparation method includes sequentially preparing the porous support layer, the polyamide layer and the modification layer on the base material layer. The method of preparing the modification layer includes under a first pressure, bringing one side of the polyamide layer into first contact with the polyphenol solution; then under a second pressure, bringing one side of the polyamide layer into second contact with the polyamine solution, to complete a self-assembly reaction.

The invention provides a lithium ion battery binder for inhibiting silicon expansion, a negative pole piece, a lithium ion battery and an electric device, and relates to the technical field of lithium ion batteries. The lithium ion battery binder capable of inhibiting silicon expansion comprises a first polymer and a second polymer, wherein the first polymer is a cross-linked polymer with dynamic reversible covalent bonds; wherein the dynamic reversible covalent bond comprises a disulfide bond or a borate bond; the binder network provided by the invention not only can effectively limit the excessive slippage of a polymer and provide higher mechanical strength, but also can generate reversible fracture and recombination at a stress concentration point in the charging and discharging process due to the dynamic reversibility of a disulfide bond or a borate bond, converts concentrated stress into fracture energy of a chemical bond and dissipates the fracture energy, so that the mechanical strength of the polymer is improved, and the service life of the polymer is prolonged. Therefore, permanent damage of the network is avoided, the pole piece structure is kept complete in long-term circulation, and stable electrochemical performance is achieved.

The invention discloses a DA bond polymer with antibacterial and self-repairing functions for a wood surface as well as a preparation method and a use method of the DA bond polymer. Chitosan serves as a wall material, cinnamon essential oil serves as a core material, the cinnamon essential oil and chitosan antibacterial microcapsules are prepared through emulsification, crosslinking and spray drying, and essential oil controlled release is achieved. Then bisphenol A diglycidyl ether DGEBA and furfuryl alcohol FA are used as raw materials, furyl functional epoxy resin FER is prepared under the catalysis of triethylamine TEA, bismaleimide BMI is added, and a DA bond self-repairing polymer is prepared through a DA reaction; and adding 4, 4-diaminodiphenylmethane DDM into the system, reacting with redundant DGEBA to generate a cross-linked polymer network, and adding the microcapsules into a DA bond semi-interpenetrating self-repairing network solution to obtain the DA bond polymer. A thin film formed by brushing and curing wood has antibacterial and self-repairing functions, scratches and microcracks on the surface of the wood can be repaired, and microbial erosion is inhibited.

The invention relates to a secondary battery, a gel electrolyte precursor solution, a preparation method and an electric device. The secondary battery comprises an electrode plate; any electrode plate independently comprises an electrode active material layer; the secondary battery comprises a gel electrolyte, the gel electrolyte comprises a first gel electrolyte and a second gel electrolyte, the first gel electrolyte is located inside the electrode active material layer, and the second gel electrolyte is located outside the electrode pole piece; each of the first gel electrolyte and the second gel electrolyte independently comprises a cross-linked polymer, a gelation solvent and an electrolyte salt; the cross-linked polymer comprises a carbon-based chain segment; the gel electrolyte includes a polymerization inhibition residue. Wherein the gel electrolyte can be formed by soaking an electrode plate in a gel electrolyte precursor solution containing a polymerization inhibitor, forming and curing, so that polymerization inhibition residues can be formed in the secondary battery. The secondary battery has excellent capacity exertion and cycle performance.

The invention provides a solid-state electrolyte membrane based on a bicontinuous lithium-conducting network and a preparation method and application of the solid-state electrolyte membrane. The solid electrolyte membrane comprises a three-dimensional ceramic lithium-conducting network, and the three-dimensional ceramic lithium-conducting network is a three-dimensional continuous porous ceramic skeleton; pores of the three-dimensional ceramic lithium-conducting network are filled with the cross-linked polymer lithium-conducting network; the cross-linked polymer lithium-conducting network contains lithium salt and a plasticizer; wherein the three-dimensional ceramic lithium-conducting network and the cross-linked polymer lithium-conducting network form a space interpenetrating structure through physical interlocking and / or chemical bonding, and Li < + > migration paths of the three-dimensional ceramic lithium-conducting network and the cross-linked polymer lithium-conducting network are continuously communicated at least in the thickness direction. According to the high-strength solid-state electrolyte membrane based on the bicontinuous lithium conduction network, through the synergistic effect of the ceramic network and the polymer network, the cycle performance of a lithium battery is improved while the mechanical and electrochemical aspects are remarkably improved, and the high-strength solid-state electrolyte membrane is suitable for large-scale application of a high-energy-density solid-state battery.

The invention provides a high-thermal-conductivity and high-adhesion thermal interface material and a preparation method thereof, and belongs to the technical field of thermal interface materials. The thermal interface material is prepared by in-situ cross-linking reaction of the following components: a polymer matrix comprising a polymer containing active functional groups and a cross-linking agent; the heat-conducting filler accounts for more than 90wt% of the total weight of the thermal interface material; the low-melting-point organic medium accounts for 0.1-5wt.% of the total weight of the thermal interface material, and the melting point of the low-melting-point organic medium is lower than the crosslinking curing temperature of the polymer matrix; wherein the heat-conducting filler forms a continuous three-dimensional heat-conducting path in a cross-linked polymer network, and the low-melting-point organic medium is uniformly dispersed in the network. Under the ultrahigh filler content, high bulk phase thermal conductivity and high initial viscosity are realized at the same time, and the contradiction between high thermal conductivity and high interface contact resistance is solved. The high viscosity at room temperature is beneficial to operation and storage, and is softened due to melting of an organic medium at the working temperature of a device, so that the interface wettability is dynamically enhanced, and the contact thermal resistance is minimized.

Disclosed are a lithium metal battery and a method of manufacturing the same, the lithium metal battery comprising a positive electrode, a negative electrode current collector, and a gel-type polymer electrolyte disposed between the positive electrode and the negative electrode current collector wherein the gel-type polymer electrolyte comprises a cross-linked polymer and a liquid electrolyte comprising an organic solvent and a lithium salt, and the cross-linked polymer is a product of a reaction between a multifunctional cross-linking agent having three or more functional groups and a (meth) acrylate-based compound having a polyethylene glycol moiety.

An anode and a lithium secondary battery comprising same are presented, the anode comprising: an anode current collector; and a protective layer disposed on the anode current collector and including a cross-linked polymer including a repeating unit derived from two or more types of multi-functional cross-linking agents, wherein the cross-linked polymer has a cross-linking density (g / n) of 300 or less.

The present invention provides an electronic or electrical device or component thereof comprising a cross-linked polymeric coating on a surface of the electronic or electrical device or component thereof; wherein the cross-linked polymeric coating is obtainable by exposing the electronic or electrical device or component thereof to a plasma comprising a monomer compound and a crosslinking reagent for a period of time sufficient to allow formation of the cross-linked polymeric coating on a surface thereof,wherein the monomer compound has the following formula:where R1, R2 and R4 are each independently selected from hydrogen, optionally substituted branched or straight chain C1-C6 alkyl or halo alkyl or aryl optionally substituted by halo, and R3 is selected from:where each X is independently selected from hydrogen, a halogen, optionally substituted branched or straight chain C1-C6 alkyl, halo alkyl or aryl optionally substituted by halo; and n1 is an integer from 1 to 27; and wherein the crosslinking reagent comprises two or more unsaturated bonds attached by means of one or more linker moieties and has a boiling point at standard pressure of less than 500° C.

The present application relates to a secondary battery, a gel electrolyte precursor solution, a preparation method, and an electric device. The secondary battery comprises a gel electrolyte, wherein the gel electrolyte comprises a first gel electrolyte inside an electrode active material layer and a second gel electrolyte outside an electrode sheet; the first gel electrolyte and the second gel electrolyte each independently comprise a cross-linked polymer, a gelling solvent and an electrolyte salt; the cross-linked polymer comprises a carbon-based chain segment; and the gel electrolyte comprises a polymerization inhibition residue.

The invention relates to the field of sealing materials, in particular to a heat-resistant and oil-resistant sealing gasket for an engine and a preparation method of the heat-resistant and oil-resistant sealing gasket. The liquid silicone rubber is prepared from the following raw materials in percentage by weight: 60-80% of a liquid silicone rubber base material, 15-28% of an oil-resistant heat-resistant base material, 0.1-3% of a cross-linking agent, 0.1-0.6% of a catalyst and the balance of a processing aid, the oil-resistant and heat-resistant base material is prepared from an inorganic filler, aramid pulp, polyhedral oligomeric silsesquioxane-alcoholic hydroxyl group, an activation dispersant and a double-active-group-epoxy silane coupling agent; the activation dispersant is a trihydroxymethyl caprolactone cross-linked polymer and / or bis (pinacol) borate; and the inorganic filler is composed of a plurality of components selected from fumed silica powder, nano-scale ceramic powder and zinc borate nano-powder. The oil-resistant and heat-resistant base material obtained by the scheme interacts with the silicone rubber base material, so that the prepared heat-resistant and oil-resistant sealing gasket for the engine has better comprehensive performance.

To provide a novel polymer suitable for use in a separation functional layer.SOLUTION: In a crosslinked polymer of the present invention, a polymer containing carbon atoms is crosslinked via a hydrocarbon group, and the hydrocarbon group is bonded to the carbon atoms. A separation functional layer 1 of the present invention contains the crosslinked polymer. The separation membrane 10 of the present invention comprises the separation functional layer 1, and a porous support 3 that supports the separation functional layer 1.SELECTED DRAWING: Figure 1

The invention relates to the technical field of building energy-saving materials, in particular to a building envelope structure multifunctional composite energy-saving material and a preparation method thereof.The building envelope structure multifunctional composite energy-saving material is prepared from, by weight, 90-110 parts of lightweight aggregate, 15-30 parts of cement-based binder and 15-30 parts of microcapsule phase change unit; the particle size of the microcapsule phase change unit is 50-200 [mu] m, the microcapsule phase change unit is composed of a core-shell structure, the core of the microcapsule phase change unit is an organic phase change substance with the phase change temperature of 20-30 DEG C, and the shell of the microcapsule phase change unit is a cross-linked polymer layer doped with modified nano ferroferric oxide. The system effectively stabilizes indoor temperature fluctuation, reduces air conditioner energy consumption, can be widely applied to outer walls, inner walls, roofs, floors and other parts of buildings, and provides an efficient and energy-saving solution for modern buildings.

The present disclosure relates generally to roofing elements and methods for making them. In one embodiment, the disclosure provides a roofing element in the form of a roofing shingle that includes a body of a foamed cured cross-linked polymer, the body having a top surface and a bottom surface, the body extending substantially in a plane and having a thickness in the range of 0.5 mm to 35 mm; and a layer of weather-resistant roofing granules disposed on and adhered at the top surface of roofing element. The roofing element can be made by providing a body of wet foamed curable composition, and allowing the curable composition to cure to provide the body of foamed cured cross-linked polymer.

The invention relates to the field of printing ink, and discloses cross-linked polymer micronized wax powder for printing ink and a preparation method thereof.According to the printing ink, a wax monomer is introduced into epoxy acrylate, and a core-shell polymer emulsion is prepared through a soap-free core-shell emulsion polymerization method, a polymer formed by butyl acrylate, acrylic acid, a functionalized silane coupling agent and a comonomer is taken as a shell, and the cross-linked polymer micronized wax powder for the ink is prepared by adopting a spray drying process; the functionalized silane coupling agent is prepared by reacting a modified silane coupling agent obtained by reacting vinyltrimethoxysilane with tetramethyldisiloxane with eugenol to prepare an eugenol-based modified silane coupling agent, and then reacting the eugenol-based modified silane coupling agent with isocyano ethyl methacrylate; the comonomer is prepared by reacting eugenol, cardanol and 1, 4-p-xylylene dichloride, and the obtained product has the antibacterial property, water resistance and adhesive force of a shell layer monomer and the mechanical property, heat resistance and antibacterial property of a core layer monomer.

The invention provides a composition for improving the permeation effect of a Campania maculata bark extract as well as a preparation method and application of the composition, and relates to the technical field of cosmetics. The invention provides an anti-aging composition for improving the permeation effect of a Campandra maculata bark extract. The anti-aging composition comprises recombinant human III type collagen, the Campandra maculata bark extract, an annona squamosa fruit extract, a Flos Magnoliae extract and a film-forming agent, the film-forming agent is composed of rhamnose and a trimethyl pentanediol / adipic acid / glycerol cross-linked polymer. The combination of the recombinant human III type collagen and the film-forming agent can strengthen hydration of cuticle, optimize the controlled release efficiency of active ingredients and broaden the permeation path, thereby forming an efficient permeation network from the skin surface to the deep layer. The combination of the Campandra mollissima bark extract, the Annona mollissima fruit extract and the Flos Magnoliae extract can construct a multi-dimensional antioxidant network, activate longevity proteins to resist saccharification and DNA damage, and comprehensively delay skin aging.

A composite separator comprises at least one base film layer and a self-healing functional layer laminated on a surface of the base film layer, wherein the self-healing functional layer contains a thermally cyclopolymerizable precursor material, and / or after the self-healing functional layer has self-healed, the precursor material forms a crosslinked polymer structure. The surface of the base film layer of the composite separator of the present application is provided with a self-healing functional layer, and the composite separator functions to isolate the positive electrode plate from the negative electrode plate and conduct lithium ions while blocking electrons when the secondary battery is under normal working conditions. When overheating or thermal runaway occurs inside the secondary battery, the precursor material in the self-healing functional layer undergoes a thermal polymerization reaction to generate a high-temperature-resistant and high-mechanical-strength crosslinked polymer.

A geopolymer precursor includes an alkaline reactive solid material containing aluminum, silicon, and oxygen, and a fluid loss control material having an ionic stability property that has a first value in water and a second value in a 3M solution of NaOH, wherein a ratio of the second value to the first value is in a range of 0.5 to 2.0. The fluid loss control material may be, or may include a crosslinked polymer, which may include a reaction product of one or more of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N‑dimethylacrylamide, N,N‑diethylacrylamide, vinyl acetate, or another monomer, and a crosslinker including one or more of methylene bisacrylamide, triallyl amine, pentaerythritol allyl ether, triallyl-triazine-trione, or another material. The geopolymer precursor may include an activator, an alkaline solution having pH of at least about 9, or both.

Particular embodiments described herein provide for a pickleball comprising a polymer outer shell, where at least a portion of the polymer outer shell is crosslinked. The pickleball with crosslinked material can be created by receiving manufactured non-crosslinked polymer pickleballs in consumer packaging in a bulk shipping container, removing the manufactured polymer pickleballs from the bulk shipping container, and passing the manufactured polymer pickleballs in the consumer packaging through an electronic beam to crosslink at least a portion of the polymer that comprises the pickleball to create the crosslinked polymer pickleballs.

The invention belongs to the technical field of carbon fiber surface treatment, and particularly relates to a cross-linked polymer modified carbon fiber, a preparation method and a composite material. Aiming at the problem of insufficient interface bonding force between the existing polyarylsulfone / ketone thermoplastic sizing agent and the carbon fiber, the core of the invention is to apply a polyarylsulfone / ketone derivative of which a main chain or a side chain is provided with an electrochemically crosslinkable active group to the technical field of carbon fiber surface treatment. And constructing a covalent bond combined three-dimensional network structure coating on the surface of the carbon fiber in situ. According to the method, firm anchoring of the coating and the carbon fibers is achieved, and the interface load transmission efficiency and the interlayer shear strength of the carbon fiber / polyether-ether-ketone composite material can be remarkably improved. The method is mild in process condition, easy in parameter control and convenient in post-treatment, meets green manufacturing requirements, and has remarkable large-scale production advantages.

The invention belongs to the technical field of lithium ion battery negative electrode materials, and particularly relates to a silicon-based composite material and a preparation method thereof, a negative electrode plate and a lithium ion battery. The silicon-based composite material comprises a silicon-based material and a composite binder coated on the surface of the silicon-based material, the composite binder is a cross-linked polymer of a first polymer and a second polymer, the first polymer is selected from polyacrylate, polyacrylates, polyacrylates, polyacrylates, polyacrylates, polyacrylates, polyacrylates, polyacrylates, polyacrylates, polyacrylates, polyacrylates and polyacrylates. The second polymer is selected from at least one of polyvinyl alcohol, polymethylacrylic acid, carboxymethyl cellulose or polyaniline. According to the silicon-based composite material provided by the invention, the surface of the silicon-based material is coated with the composite binder, on one hand, the inhibition effect on silicon expansion can be improved, on the other hand, the polyacrylic acid binder can directionally act on the silicon-based material, the content and the cost of the polyacrylic acid binder in negative electrode slurry are reduced, and the processing performance of the silicon-based composite material is improved; meanwhile, the consumption of main materials can be increased, and the energy density and cycle life of the lithium ion battery are improved.

Osteoinductive materials and modular bioactive synthetic bone craft (MST) devices are provided. The MST devices comprise the osteoinductive materials for applications in regenerative medicine and treatment of diseases. The osteoinductive material can be characterized by a scaffold filament, a hydrogel layer cross-linked with the scaffold filament, and an osteoinductive growth factor. The hydrogel layer contains the osteoinductive growth factor, a covalent cross-linking polymer, a covalent cross-linking monomer, and a physical cross-linking polymer.

The invention discloses a current collector for a negative-electrode-free lithium metal battery and a preparation method and application of the current collector, the current collector comprises a current collector base material and a porous carbon material arranged on the surface of the current collector base material, the porous carbon material is obtained by carbonizing a porous polymer, and the porous polymer comprises a cross-linked polymer and an organic iron compound. The porous polymer containing the organic iron compound is carbonized to form the porous carbon material, the porous carbon material has high conductivity, in the carbonization process, the organic iron compound is converted into iron carbide and distributed in the porous carbon material, the porous carbon material serves as a current collector modification layer, and the conductivity of the current collector is improved. During deposition, lithium ions are induced by iron carbide and can penetrate through holes to be deposited in the carbon material instead of being deposited on the surface, so that lithium dendrites can be reduced. Moreover, the porous carbon material disclosed by the invention has relatively low thickness sensitivity, uniform deposition of lithium ions can be realized in liquid and solid battery systems, formation of lithium dendrites is reduced, and the safety of the negative-electrode-free lithium battery is improved.

A method of making a polymer that includes reacting an olefin in the presence of an ensemble of crosslinker molecules, each molecule of the ensemble comprising a —Sn— moiety and having at least two polymerizable groups, wherein n is an integer of from 1 to 8, in the presence of a polymerization initiator, to produce a reversibly-crosslinked polymer that includes crosslinking bonds, said crosslinking bonds being bonds that dissociate when the reversibly-crosslinked polymer is reprocessed at temperatures 50° C. or greater, where, for at least 90% of the crosslinkers molecules in the ensemble, n is equal to 2.

This method for producing water-absorbing resin particles containing a crosslinked polymer includes: a preparation step of preparing a polymer mixture containing a polymer and a solvent; a molding step of molding the polymer mixture so as to have a large specific surface area to obtain a molded polymer mixture; and a crosslinking step of heating the molded polymer mixture to crosslink the polymer, thereby obtaining a crosslinked polymer mixture containing a crosslinked polymer.

The application discloses an impact-resistant mine protective clothing and belongs to the technical field of mine protective clothing. The mine protective clothing is provided with an impact-resistant protective layer, and the impact-resistant protective layer comprises alternately stacked and connected first and second functional layers. The outermost layer of the impact-resistant protective layer towards the outside of a wearer of the protective clothing is the first functional layer, the first functional layer is a composite material layer composed of aramid woven fabric and a second resin, the second resin is filled in the fiber gap of the aramid woven fabric as a continuous matrix and covers the fiber surface, the weaving raw material of the aramid woven fabric is aramid monofilament subjected to first resin impregnation pretreatment, the first and second resins are both thermosetting resins, the first resin comprises a first compound, the first compound contains a morpholine ring and is bonded in a crosslinking network of the first resin, and the second functional layer is a dynamic crosslinking polymer layer. Compared with the prior art, the application can not only resist impact and be hard, but also absorb impact force and reduce the risk of blunt injury of personnel.

A method for making a battery cell includes: disposing an electrode assembly within a battery can; assembling a top cap assembly to the battery can to form a battery cell having at least a first filling hole and a second filling hole; disposing a first portion of a liquid solution within the battery cell via the first filling hole, the liquid solution including an organic solvent, a cross-linkable polymer and a cross-linking agent; converting the first portion of the liquid solution into a first conductive layer disposed between the electrode assembly and the battery can; disposing a second portion of the liquid solution within the battery cell via the second filling hole; converting the second portion of the liquid solution into a second conductive layer disposed between the electrode assembly and the battery can; and filling the battery cell with a liquid electrolyte via an electrolyte filling hole.