321results about How to "Achieve composite" patented technology

The invention relates to a preparation method for a polyimide/oxidized graphene nanocomposite film, and belongs to the technical field of preparation of functional polymer materials. The preparation method comprises the following steps: performing ultrasonic even dispersion on the oxidized graphene in an organic solvent to obtain an oxidized graphene sheet suspension, wherein per ml of the oxidized graphene sheet suspension contains 1.3*10<-5>-1.3*10<-4>g oxidized graphene sheets; introducing nitrogen for carrying out deoxidization protection, adding diamine monomers into the suspension, mechanically stirring until full dissolution is achieved, adding dianhydride monomers, the moles of which are equal to that of the diamine monomers, in batches, and mixing for one to six hours under the ice bath conditions, so as to obtain polyamide acid/oxidized graphene composite solution; pouring the polyamide acid/oxidized graphene composite solution onto a die, removing the organic solvent, performing gradient temperature rise within 100-300DEG C, and carrying out thermal imidization to obtain the polyimide/oxidized graphene nanocomposite film.

The invention relates to a preparation method of a high-performance graphene oxide/solution polymerized styrene-butadiene rubber composite material, belonging to the field of rubber composite materials. The preparation method comprises the following steps: preparing a solution polymerized styrene-butadiene rubber emulsion, compounding graphene oxide with the solution polymerized styrene-butadiene rubber emulsion, co-flocculating the composite emulsion, and mechanically blending. The solution polymerized styrene-butadiene rubber emulsion has the advantages of simple preparation technique and low cost. By using the emulsion compounding, the graphene oxide has high peeling property and high dispersity. The graphene oxide/solution polymerized styrene-butadiene rubber master batch can be directly machined or combined with solution polymerized styrene-butadiene rubber solid, and can also be doped with other fillers to prepare the high-performance solution polymerized styrene-butadiene rubber nano composite material. The solution polymerized styrene-butadiene rubber composite material prepared by the method can maximally display the function of the graphene oxide; and the method can enhance the mechanical strength, wearability and slip resistance of the solution polymerized styrene-butadiene rubber composite material, and lower the heat generation and the like. The method is simple and easy to implement, and has wide application prospects.

The invention relates to a top emission organic light-emitting device. The top emission organic light-emitting device comprises a substrate, a cathode electrode layer, an electronic transmission layer, an electron hole barrier layer, a luminous layer, an electronic barrier layer, an electron hole transmission layer and an anode electrode all of which are arranged in a stack-up mode. The electronic transmission layer comprises a plurality of sub-transmission layers which are arranged in a stack-up mode. Each sub-transmission layer is mainly made of main materials and doping materials mingled with the main materials. The light of the top emission organic light-emitting device is emitted from the anode electrode on the top, and therefore the problem that the luminous efficiency of a traditional top emission electrode is low is solved. The gradient doping method is adopted in the electronic transmission layer of the top emission organic light-emitting device, ohm contact is formed between the electronic transmission layer and the cathode electrode layer, and therefore the carrier injection efficiency is improved, the doping concentration is reduced gradually along with the increasing of the thickness of the electronic transmission layer, electrons are injected and transmitted in a gradient mode, carrier injection is controlled, excition recombination can be controlled, and the high light-effect is achieved. The invention further relates to a manufacturing method for the top emission organic light-emitting device.

The invention discloses a PVC (Polyvinyl Chloride)/graphite alkene antistatic composite material. The PVC graphite alkene antistatic composite material is prepared by the following ingredients in percentage by weight: 2-20% of a shock resistance modifying agent, 0.5-10% of an electric conductive filler, 2-20% of a processing agent and the balance of matrix resin. In addition, the invention also provides a preparation method of the PVC/graphite alkene antistatic composite material. Due to the adoption of the preparation method, the PVC has the antistatic property, and the enhancing and toughening are realized at the same time; and the surface resistivity of the prepared PVC/graphite alkene antistatic composite material is 104-108 omega, the volume resistivity is not more than 108 omega/cm, the tensile strength is not less than 50MPa, the impact strength is not less than 5kJ/m<2>, the elongation at break is not less than 75%, and the antistatic requirements on GB/T20105-2006 and MT164-2007 and MT165-2007 in the colliery industry are met.

The invention relates to the fracturing technology, in particular to a chemical and physical combined explosion fracturing device and a manufacturing method of the chemical and physical combined explosion fracturing device. The chemical and physical combined explosion fracturing device and the manufacturing method of the chemical and physical combined explosion fracturing device resolve the problems at the existing fracturing technology is limited in fracturing effect, narrow in application range and poor in use safety. The chemical and physical combined explosion fracturing device comprises a fracturing device outer shell, wherein the front portion of an inner cavity of the fracturing device outer shell is in interference fit with a powder chamber outer barrel, an inner cavity of the powder chamber outer barrel is provided with a powder screening pipe in a sleeved mode, a first explosion film is arranged on an opening in the rear end of the powder screening pipe in a sealing mode, an inner cavity of the powder screening pipe is filled with a powder pillar which is connected with an ignition line, a pressing nut is arranged on an opening in the rear end of the fracturing device outer shell in a sealing mode, a through hole penetrating through the front portion and the rear portion is formed between the front end surface and the rear end surface of the pressing nut, a second fracturing film is arranged on the through hole in a sealing mode, and the rear portion of the inner cavity of the fracturing device outer shell is filled with high-pressure CO2 in a sealing mode. The chemical and physical combined explosion fracturing device and the manufacturing method of the chemical and physical combined explosion fracturing device are suitable for the development of petroleum, natural gas, coal bed gas, shale gas and the like, and suitable for a pre-fracturing and permeability-increasing process of extraction of coal bed gas under a coal mine shaft.

The invention relates to the field of flame-retardant polymer composite materials and preparation thereof, and in particular to a functionalized nanocarbon microsphere blending modified polyethylene terephthalate (PET) and a preparation method thereof. Nanocarbon microsphere flame retardant is first treated by low-temperature plasma, so that hydroxyl groups and carboxyl groups are generated on thesurface, phosphor-nitrogen flame retardant is grafted onto the surfaces of the nanocarbon microspheres, and the surface is then wrapped by a layer of PET by in-situ polymerization, so that a nanocarbon microsphere flame retardant which is highly compatible with the base material PET is prepared. PET and the prepared nanocarbon microsphere flame retardant are melted to be blended and molded by injection, and thereby the PET/functionalized nanocarbon microsphere composite material is prepared. The flame-retardant property of the PET/functionalized nanocarbon microsphere composite material prepared according to the invention is excellent, the heat resistance is increased, moreover, the tensile strength is also improved to a certain degree, and the defects of phosphor-nitrogen intumescent flame retardants, i.e. poor durability and poor compatibility between carbon microspheres and base material PET, are overcome.

The invention relates to a preparation method for different carbon fibers / a cobalt hydroxide electrode and a solid-liquid composite electrode system. By means of pretreatment and modification of different carbon fibers, the carbon fibers serve as a substrate, composite of metal oxide or hydroxide and the carbon fibers are realized by the electrochemical deposition, and a solid electrode is obtained and has high specific capacitance in the alkaline aqueous solution. Redox substances are added into the alkaline aqueous solution, a composite electrode system that the solid electrode and liquid-phase electrolyte supply the pseudocapacitance jointly is obtained. The composite electrode system has ultra-high specific capacitance, is applied in supercapacitors, and has the advantages of ultra-high energy density, high power density and long service life. The specific capacitance of the composite electrode system can be adjusted by changing the concentration and volume of the redox substances, and the energy density and power density of the supercapacitors can be further changed to meet different using requirements.

The invention relates to a preparation method and application of nano TiO2(B)/carbon composite fibers for a lithium ion battery cathode. The preparation method comprises the following steps: firstly, synthesizing tetrabutyl titanate/polyvinylpyrrolidone precursor fibers through electrostatic spinning; then, drying the precursor fibers, and carbonizing the precursor fibers at the temperature of 300-500 DEG C under the protection of nitrogen or argon; finally, carrying out hydro-thermal treatment on the carbonized product to obtain the nano TiO2(B)/carbon composite fibers. The preparation method disclosed by the invention is simple and convenient, the composition of titanium dioxide and carbon source is realized in one step, and the introduction of carbon source is not required in subsequent experiment, thus the purity of a product is ensured, the raw material is saved, and the production cost is low. The obtained nano TiO2(B)/carbon composite fibers for the lithium ion battery cathode material have good cycle performance, and can keep high capacity especially at quick charging and discharging rates, thus the cycle efficiency is high, the capacity is reduced slowly, the conductivity is improved because of the introduction of carbon, and the resistance is reduced.

The invention discloses an iron-based composite material reinforced by in-situ titanium carbide grains and a preparing method thereof. The preparing method is characterized in that: high-strength high-toughness spheroidal graphite cast iron is used as a matrix, in-situ grown submicron titanium carbide grains are used as reinforcing grains, and the titanium carbide grains are uniformly distributedon the spheroidal graphite cast iron matrix to obtain a high-strength high-toughness iron-based composite material; and iron powder, titanium powder and carbon powder are fully mixed by utilizing a mechanical alloying method to form composite powder, spheroidal graphite cast iron is molten and treated by a conventional method, the composite powder is added to molten iron during secondary inoculation in proportion, constant temperature is kept for 5-10min and casting is carried out to obtain a cast-state composite material, and the cast-state composite material is subjected to isothermal quenching heat treatment to obtain the iron-based composite material. According to the iron-based composite material prepared by the method disclosed by the invention, the in-situ titanium carbide grains are small in size and uniformly distributed on the matrix so as to ensure the characteristics of high strength and high toughness of the iron-based composite material.

The invention relates to a covalent bond type inorganic/organic compound flocculant, a production technique and an application thereof. The invention adopts Gamma-APDES (gamma-Aminopropylmethyldiethoxysilane) and aluminum chloride solution as the raw materials to produce the covalent bond type inorganic/organic compound flocculant by gradually dripping alkaline. The a covalent bond type inorganic/organic compound flocculant, the production technique and the application thereof have the advantages that the inorganic constituent and the organic constituent in the flocculant are bonded by covalent bond, which has good stability, good turbidity removal and decoloration effect and wider optimal dosing range. The covalent bond type inorganic/organic compound flocculant can be used for the water purification and the turbidity removal, decoloration, deoiling and solid-liquid separation during the wastewater treatment.

The invention discloses a method for preparing a composite antiwear guide plate, which comprises the following steps: alloy dust core bars are bound into bundles and arranged in a guide plate casting mould cavity, and the volume of the alloy dust core bars accounts for 20 to 60 percent of the total volume of the guide plate; molten matrix metal is cast into the guide plate casting mould cavity, the alloy dust core bars are melted and dissolved under the heat effect of the matrix metal, a great number of alloy elements and the molten matrix metal generate metallurgical combination reaction so as to generate a highly dispersed alloy structure on the original position; and finally the alloy structure is cooled and solidified, and the bar-shaped hard phase is metallurgically and transitionally combined into a whole with the matrix metal, thereby preparing the composite guide plate which takes the high-strength and high-ductility metal as the matrix and contains a certain number of metallurgically combined bar-shaped hard points. The composite anti-wear guide plate has high strength and high ductility of the matrix metal and high hardness and high wear resistance of the hard phase, can simultaneously bear high pressure and strong wear, and has the characteristics of long service life, low price, simple preparation and so on.

The invention discloses an in-situ polymerization composite surface sizing system and a surface sizing craft for needle punching non-woven fabrics, namely a chemical process that organic monomers are polymerized to form high polymer materials and a flame planting composite process that non-woven fabrics are soaked by the organic monomers are combined in the same production line in a situ mode. The surface sizing system comprises a glue producing device, a glue seeping/flame planting sizing device and a drying device. The surface sizing craft achieved through the surface sizing system comprises the steps of (1) adding an emulsifying agent, a buffer agent and some water inside a burdening pot, stirring, evenly mixing the emulsifying agent, the buffer agent and the water, adding butyl mehtacrylate and methyl metacrylate, stirring, adding an initiating agent, stirring for an hour in a temperature range of 60 to 70 DEG C to form prepolymer, adding remaining water, stirring, evenly mixing the remaining water and the prepolymer, obtaining water miscible liquid, cooling the water miscible liquid to room temperature, introducing the water miscible liquid to a mixing pot, adding a polysaccharide compound into the mixing pot, mixing the polysaccharide compound with the water miscible liquid in a continuously stirred mode, forming suspension liquid; (2) treating the needle punching non-woven fabrics in a sizing mode through the glue seeping/flame planting sizing device; and (3) drying the needle punching non-woven fabrics and finalizing the design.

The invention discloses a preparation method of a thin layer graphene polymer composite material. The method includes enabling a graphite intercalation compound and/ or thin layer graphene with a catalyst adsorbed on the surface and at least one polymer monomer to form a mixed reaction system and conducting catalytic polymerization reaction under the set condition to obtain the thin layer graphene polymer composite material. An intercalation agent in the graphite intercalation compound and the catalyst are at least selected from any one of inorganic acid, organic acid, halogen, metal salt and metal oxide. The preparation method is simple in process, easy to implement, safe, environment-friendly, low in cost and suitable for industrial batch production. Further, the obtained composite material can be applied to lithium ion battery electrode materials or super capacitor electrode materials.

The invention provides a cationic polymer-loaded paclitaxel/indocyanine green (ICG) co-delivery micelle and a preparation method thereof. To simultaneously load the chemotherapeutic paclitaxel and the photosensitizer ICG, an amphiphilic degradable cationic nano-micelle MPEG-PCL-PEI is used as a loading medium for the chemotherapeutic paclitaxel; a cationic polymer block is introduced into a polymer MPEG-PCL which forms the nano-micelle, so surface charges of the micelle can be changed; negatively-charged ICG molecules are adsorbed through interaction between positive and negative charges, and sustained release of paclitaxel and ICG is realized; so a novel method is provided for integrated diagnosis and treatment of tumors. According to the invention, the triblock cationic polymer synthesized from an amphiphilic polymer-grafted cationic fragment can simultaneously load the chemotherapeutic paclitaxel and the photosensitizer ICG approved by FDA, so compounding of the chemotherapeutic and fluorescence molecules is realized, and fluorescent imaging of a tumor site as well as target drug delivery for a tumor is complished.

The invention discloses a flexible heat-preserving tapestry brick and a preparation method of the flexible heat-preserving tapestry brick. The raw material of the brick is sizing agent or dry power formed by evenly mixing mud powder, a hollow filler, crylic acid monomers, a cross-linking agent, reinforced fibers, a solvent, an initiator and a fire retardant according to a certain proportion. The preparation method comprises the following steps of: forming in a mould in a heating way, drawing, drying, trimming and the like to obtain the flexible tapestry brick with the functions of heat preservation and flame retardance. The flexible heat-preserving tapestry brick has the characteristics of being flexible, heat-preserving, water-resistant, fire-resistant, anti-stain, anti-aging, scrubbing-resistant, low in specific gravity, simple in production process, low in cost and the like, thereby being widely applicable to the decoration indoors and outdoors.

In order to solve the problems that existing titanium and titanium alloys have low bioactivity and low bonding strength with bone tissues, the invention relates to a preparation method of a titanium surface multilevel porous structure. The method comprises: 1. polishing a titanium material by 240-mesh, 600-mesh and 1000-mesh metallographical sandpaper hierarchically, then performing ultrasonic cleaning with acetone and alcohol in order at room temperature, and conducting drying so as to obtain a treated titanium material; 2. carrying out sand blasting treatment with aluminum oxide particles; 3. soaking the titanium material subjected to the sand blasting treatment in a sulfuric acid solution; 4. taking the acid-etched titanium material as the anode, and taking platinum as the cathode, placing them in an NH4F aqueous solution, and conducting anodic oxidation treatment, thus obtaining the anode oxidized titanium material; and 5. cleaning the anode oxidized titanium material with an NaOH solution, deionized water and anhydrous ethanol, and performing drying, thus obtaining the titanium surface multilevel porous structure with high bioactivity and high bonding strength with bone tissues. The method provided in the invention is applied in the biomedical field.

A dual-gantry combined horizontal numerally controlled machine-tool able to perform turning, milling, drilling, reaming, boring, etc is composed of two mainshafts for turning and milling, two tool carriages for turning and milling, small and big gantries, main body, saddle, two longitudinal slide plates and tailstock. Its advantages are high machining precision, and high rigidity.

The invention discloses a nylon 6/plant fiber composite material and a preparation method thereof. The composite material is prepared and obtained by in-situ polymerization of the following components in part by weight: 100 parts of Epsilon-caprolactam, 0.2-1.5 parts of plant fibers, 0.3-0.8 part of catalyst, 0.3-1 part of cocatalyst, 0.5-3 parts of activators and 2-10 parts of water. The preparation method of the nylon 6/plant fiber composite material comprises the following steps: melting the monomer Epsilon-caprolactam, uniformly agitating and mixing with the plant fiber, the catalysts, the cocatalyst, the activator and the water and singly dispersing the plant fibers in the molten Epsilon-caprolactam, adding into a reaction vessel for reaction and preparing the nylon 6/plant fiber composite material with excellent performance through the processes of prepolymeriazation, nitrogen introduction, water removal and post polymerization.

The invention discloses a large-scale ink-jet printing method for a three-dimensional metamaterial array. Through design of a universal sprayer of an M x N nozzle array and a special sprayer of a specific topological structure, pattern information is directly and rapidly printed to a substrate through the nozzle array, and then a large-scale nano structure array can be rapidly and conveniently obtained. Through accurate control over the movement of a displacement table, the size and appearance features of the nano structure can be controlled, and three dimension, inclination, bending, spiral, a heterostructure and the like are included. By utilization of the ink-jet printing method, various complex topological structure arrays can be prepared. The large-scale ink-jet printing method is applicable to various materials and substrates and is widely applied to the demand field of different devices.

A process for preparing Al-based ZrW2O8 (or SiCp=ZrW2O8) particle composition with high compactness and strength and near zero expansibility includes such steps as prefabricating the blank of ZrW2O8 (or SiCp=ZrW2O8) particles, preheating it, penetrating the molten Al in the gaps between said particles, and quick solidifying.