963 results about "Composite polymer" patented technology

The invention relates to a preparation method of a polymer / graphene composite material through in situ reduction, which is characterized by comprising the following steps: adopting ultrasonic wave or grinding to evenly disperse the graphite oxide prepared by a Hummers method into polymer dispersion; introducing reducing agent into the polymer dispersion for in situ reduction, enabling the graphite oxide to be reduced into the grapheme so as to obtain stable polymer / graphene composite emulsion; carrying out demulsification, agglomeration and drying to obtain the composite polymer / grapheme composite master batch; adding the dried polymer / grapheme composite master batch and various assistants into the polymeric matrix according to a certain ratio; and carrying out double-roller mixing, vulcanization, melt extrusion or injection molding to obtain the polymer / graphene composite material with excellent physical and mechanical properties.

Several examples of additive manufacturing machines and methods for depositing a bead of composite polymer material having continuous fiber reinforcement are disclosed. A length of fiber reinforcement is provided to a nozzle. The fiber reinforcement is embedded into a stream of a base polymer material at the nozzle and deposited as a bead of composite polymer material having fiber reinforcement. The fiber reinforcement may be dry or pre-impregnated with a reinforcing polymer. The additional strength of the composite polymer material having fiber reinforcement allows for true, three-dimensional printing of articles having unsupported regions.

The present invention relates to an anti-icing composite nano-coating and an application thereof. The anti-icing composite nano-coating is composed of organic fluorine-silicon composite polymer material, nano-material, curing agent, solvent and filler, the weight percentages of which are as follows: 1 to 98 percent of organic fluorine-silicon composite polymer material, 1 to 92 percent of nano-material, 1 to 50 percent of curing agent, 0 to 90 percent of solvent and 0 to 50 percent of filler. The doses of substances are uniformly mixed and ground so that the anti-icing composite nano-coating is prepared. The anti-icing composite nano-coating can be used to prevent the power transmission lines, conductors, conductor metal fittings, pole towers, stayguys, stayguy fixtures and other power and communication facilities of electric power systems and communication networks from being iced.

A lead-free, composite polymer based bullet and cartridge case and methods of manufacturing the same, wherein the composite polymer material includes a tungsten metal powder, nylon 6 / 6, nylon 6, short glass fibers, as well as additives and stabilizers. The cartridge case includes a lip lock configured to matingly engage a cannelure formed along an outer circumferential surface of the bullet. The cartridge case also includes resilient walls wherein the case may snap fit onto the bullet. The bullet and cartridge case may be formed in a single step process by injection molding or a two step process including injection molding and a welding process.

The invention comprises a composite material comprising a host material in which are incorporated semiconductor nanocrystals. The host material is light-transmissive and / or light-emissive and is electrical chargetransporting thus permitting electrical charge transport to the core of the nanocrystals. The semiconductor nanocrystals emit and / or absorb light in the near infrared spectral range. The nanocrystals cause the composite material to emit / absorb energy in the near infrared (NIR) spectral range, and / or to have a modified dielectric constant, compared to the host material. The invention further comprises electro-optical devices composed of this composite material and a method of producing them. Specifically described are light emitting diodes that emit light in the NIR and photodetectors that absorb light in the same region.

Polymer-pigment composites, aqueous dispersions of polymer-pigment composites and coating compositions containing the polymer-pigment composites are disclosed, wherein the polymer is formed from terminally-unsaturated oligomers containing acid functionality.

The invention relates to a method for preparing an environment-friendly silicone-modified acrylate adhesive. Raw materials of the preparation method comprise a basic monomer, a modified monomer and an auxiliary agent, wherein the basic monomer comprises a hard monomer, a soft monomer and a crosslinking monomer; the modified monomer comprises a silane monomer, a coupling agent and inorganic nano-powder; the crosslinking monomer is glycidyl acrylate or glycidyl methacrylate; and the grain diameter of the inorganic nano-powder is less than 80 nanometers. In the preparation method, the crosslinking monomer adopts the glycidyl acrylate or the glycidyl methacrylate so as to be environment-friendly. The product prepared by the method is a nanometer / silicone double-modified molecular composite polymer material. The molecular composite material is combined with the advantages of two polymer materials, namely silicone and polyacrylic ester and an inorganic nanometer material, and has better performance and broad application.

A polymer electrolyte membrane obtained by subjecting a sulfonated polyarylene membrane having an initial water content of 80-300 weight % to a hot-water treatment. A composite polymer electrolyte membrane comprising a matrix made of a first sulfonated aromatic polymer having a high ion exchange capacity, and a reinforcing material constituted by a second sulfonated aromatic polymer having a low ion exchange capacity in the form of fibers or a porous membrane.

This disclosure provides casings and materials for the thermal management and protection of an electrochemical cell. The casing may also comprise a composite polymeric material for electrochemical cell thermal management, the composite polymeric material comprising a crosslinked polyether polyol phase change material configured to be in physical contact with at least a portion of an electrochemical cell.

<heading lvl="0">Abstract of Disclosure< / heading> An array of selectively addressible microelectrodes for combinatorial synthesis of complex polymers or alloys.

The invention relates to a preparation method of a full-solid-state nano composite polymer electrolyte. The preparation method comprises the following steps of: mixing surface functional graphene, dissociated lithium salt and a polymer substrate and dissolving into an organic solvent, thereby obtaining a sol-like compound through ultrasonic treatment and mechanical blending; pouring on a Teflon template; and drying in a vacuum drying tank, thereby obtaining an electrolyte membrane. According to the invention, the full-solid-state nano composite polymer electrolyte is prepared through adding chemically modified graphene, not only room temperature conductivity is high, but also the surface is smooth and even, the internal components are uniform, and the full-solid-state nano composite polymer electrolyte is high in lithium ion transference number and electrochemical stability.

The present invention relates to composite polymer material performance improving technology. The liquid natural rubber slurry contains natural latex and carbon nanotube (CNT) and has total solid content of natural latex and CNT in 5-30 % and weight ratio between CNT and dry natural latex of 1-50 %. The liquid natural rubber slurry is prepared through surface treatment of CNT for hydrophilicity; mixing with dispersant and deionized water to obtain water suspension of CNT; regulating the pH value of the suspension to 9-12; and finally mixing with natural latex to obtain the liquid natural rubber slurry with added CNT. The liquid natural rubber slurry with homogeneously dispersed CNT is used in preparing CNT modified rubber powder and CNT modified sulfurized rubber products with greatly raised mechanical, electrically conducting, heat conducting, antistatic and other performance.

A composite polymer fiber comprises a polymer filler material and a plurality of polymer scattering fibers disposed within the filler material. At least one of the filler material and the scattering fibers is formed of a birefringent material. The refractive indices of the filler material and the scattering fibers can be substantially matched for light incident in a first polarization state on the composite polymer fiber and unmatched for light incident in an orthogonal polarization state. The scattering fibers may be arranged to form a photonic crystal within the composite fiber. The composite fibers may be extruded and may be formed into a yarn, a weave or the like. If the filler material is soluble, it may be washed out of the yarn or weave, and the scattering fibers may then be infiltrated with a resin that is subsequently cured.

Disclosed are a series of composite polymer composite structures formed by the coextrusion of at least two distinct polymeric compositions including a structural composition and a coating composition whereby the primary structural frame formed from the structural composition includes at least one, and typically a plurality, of longitudinal recesses or cavities. These recesses or cavities may, in turn, be filled with a third distinct polymeric composition that may include wood byproducts and / or a foaming or blowing agent.

Medical devices, and in particular implantable medical devices, may be coated to minimize or substantially eliminate a biological organism's reaction to the introduction of the medical device to the organism. The medical devices may be coated with any number of biocompatible materials. Therapeutic drugs, agents or compounds may be mixed with the biocompatible materials and affixed to at least a portion of the medical device. These therapeutic agents or compounds may also further reduce a biological organism's reaction to the introduction of the medical device to the organism. In addition, these therapeutic drugs, agents and / or compounds may be utilized to promote healing, including the prevention of thrombosis. The drugs, agents, and / or compounds may also be utilized to treat specific disorders, including vulnerable plaque, and atherosclerosis in type 2 diabetic patients. Therapeutic agents may also be delivered to the region of a disease site. In regional delivery, liquid formulations may be desirable to increase the efficacy and deliverability of the particular drug. Various materials and coating methodologies may be utilized to maintain the agents or compounds on the medical device until delivered and positioned.

The present invention relates to a method for manufacturing composite polymer electrolyte membranes coated with inorganic thin films for fuel cells using a plasma enhanced chemical vapor deposition (PECVD) method or a reactive sputtering method, so as to reduce the crossover of methanol through polymer electrolyte membranes for fuel cells and enhance the performance of the fuel cells. The manufacturing method of composite polymer electrolyte membranes coated with inorganic thin films for fuel cells according to the present invention is characterized to obtain composite membranes by coating the surface of commercial composite polymer electrolyte membranes for fuel cells with inorganic thin films using a PECVD method or a reactive sputtering method. The inorganic materials to form the inorganic thin films are chosen one or more from the group comprising silicon oxide (SiO2), titanium oxide (TiO2), zirconium oxide (ZrO2), zirconium phosphate (Zr(HPO4)2), zeolite, silicalite, and aluminum oxide (Al2O3). The present invention, by coating the polymer electrolyte membranes for fuel cells with inorganic thin films via a PECVD method or a reactive sputtering method, reduces the methanol crossover sizably without seriously reducing the ionic conductivity of polymer electrolyte membranes, thereby, when applied to fuel cells, realizes a high performance of fuel cells.

Organic-inorganic composites were prepared as colloidal particles of a cross-linked, thermally responsive polymer. Hybrid PNIPAM-polysiloxane particles and composite polymeric particles with embedded nanoparticles of an inorganic metal-oxide (MOx) such as CeO2 and TiO2 were formed. To promote the incorporation of unaggregated nanoparticles, temperature responsive microspherical gels (microgels) of N-isopropylacrylamide (NIPAM) with interpenetrating (IP) linear chains of poly(acrylic acid) (PAA) were used. The organic-inorganic composition of the hybrid polymer network was controlled by changing the time for condensation and hydrolysis of the siloxane monomer during synthesis. Experimental results indicated that the planarization of silicon oxide wafers using these hybrid particles and composites exhibited lower topographical variations and surface roughness as compared to slurries consisting of only silica or ceria nanoparticles while achieving similar removal rates and better or similar frictional characteristics.

The invention discloses a composite material used for catalyzing and degrading nitrogen oxide and its preparation method and application thereof. The invention of the hollow g-C3N4 nanospheres / reduced graphene oxide composite-polymer carbonized nanofiber material is prepared as follow: 1) the preparation of silica nanospheres; 2) the preparation of hollow g-C3N4 nanospheres; 3) the preparation of graphene oxide; 4) the preparation of surface modified hollow g-C3N4 nanoparticles preparation; 5) the preparation of composites; 6) the preparation of composite-polymer carbon nanofiber material. The raw materials used in the process is low cost and easy to get; the operation of the invention is simple and convenient without the use of expensive equipment in the whole process; the composite has high adsorption efficiency of ppb level nitrogen oxide with good repeatability.

The present invention relates to composite polymer material, and is especially stretching material with negative Poisson's ratio and its preparation process and use. The foamed material obtained through secondary foaming process or screw extrusion foaming process has microscopic double fan-shaped composite structure with middle layer of regular honeycomb structure, outer layer of ordered gradually lengthened arrangement and micropores of 80-150 micron size. The foamed material has the mechanical performance of perpendicularly expanding while being stretched and perpendicularly contracting while being extruded. By means of special preparation process, the foamed material may have raised compression resistance, shock absorption, rebound elasticity and other mechanical performance. The unique mechanical performance makes the material possess application in composite board, waste water treatment, deep water job and other fields.

The invention relates to a method for preparing a multi-layer composite-structure filter membrane with a plasma pretreatment method. According to the filter membrane, a polymer nano-grade fiber film layer prepared through an electrostatic spinning method, and a hydrophilic polymer ultra-thin separation layer are sequentially arranged on a non-woven fabric support layer substrate. Before the hydrophilic polymer ultra-thin separation layer is prepared through an interfacial polymerization reaction, the plasma pretreatment is carried out on the surface of the polymer nano-grade fiber film layer, such that functional groups are grafted on the surface of the polymer nano-grade fiber. Therefore, polymer nano-grade fiber film surface property is improved, such that the polymer ultra-thin separation layer can be better compounded, and the filtering performance of the multi-layer composite-structure filter membrane is comprehensively improved. The multi-layer composite-structure filter membrane provided by the invention has the characteristics of high water flux, high retention rate, and stable chemical property. The film can be used in productions of water used in special conditions, such as domestic water and drinking water. The film is suitable to be used in fields such as medicines, foodstuffs, environment protection, and the like.

A process for preparing composite polymer / montmorillonite nanoparticles by in-situ organizing of montmorillonite features that the imidazole-type or pyridine-type organic salt is used in non-water solvent to obtain organic modifier for organizing and dispersing the montmorillonite, resulting in the colloidal solution of its nanoparticles. The solvents with different properties and the organic salts with different molecular structures can be chosen for preparing the nanoparticles with relative performance. Its advantages are high thermal stability and high compatibility.

A transparent, reinforced, composite polymeric fiber that has a polymeric body portion made from a first thermoplastic polymer that is transparent to visible light. The fiber includes polymeric reinforcement elements embedded within the polymeric body portion. The polymeric body portion extends between and about the polymeric reinforcement elements. Each polymeric reinforcement element is formed from a second thermoplastic polymer that is transparent to visible light. The peripheral portion and outer surface of the polymeric body portion defines a peripheral portion and outer surface, respectively, of the transparent, reinforced, composite polymeric fiber. A plurality of the fibers are formed into an array that is processed with a consolidation process to form a transparent, reinforced, composite structure.

The invention discloses an all-solid-state composite polymer electrolyte and a preparation method thereof. An adopted polymer matrix is a hyperbranched polymer or a star-like polymer. Different types of lithium salt are added into the polymers, and are compounded with substances such as inorganic fillers (such as nanoparticles, nanofibers), ionic liquid, carbonic ester compounds as well as other linear or branched polymers (such as polyether, polydioxolane, polycaprolactone, polyphosphazene, polyurethane, Makrolon, polyamide, polyimide, polyester, polyvinylidene fluoride, polytetrafluoroethylene, polyhexafluoropropylene or corresponding segmented copolymers or graft polymers thereof and the like) respectively, a film can be formed through a solution pouring process, the all-solid-state composite polymer electrolyte is prepared, and the room-temperature conductivity of the electrolyte is approximate to 10<-4> S / cm. The solid electrolyte has potential applications in electrochemical devices such as secondary lithium ion batteries, supercapacitors, electronic sensors, electrochromic devices and the like.

A lead-free, composite polymer based bullet and cartridge case, wherein the cartridge case is formed by matingly engaging a cylindrical body and a corresponding base. A belted cartridge case has a double wall design, which provides the cartridge with increased thickness, and in turn, a reinforced structure useful for withstanding breakage from an impact caused by high pressure loads. The belt is formed to have an inner diameter at a first end of the base that is larger than the outer diameter of any portion of the cylindrical body. A nested cartridge case allows the second end of the case to nest in a first end of the base at an engaging region.