78 results about "Compositermes" patented technology

The invention provides a high-tenacity polycrystalline composite material. The high-tenacity polycrystalline composite material particularly comprises, by mass, 72%-92% of polycrystalline super-hard phase, 7.5%-25% of binding agents and 0.5%-15% of toughening agents. The toughening agents are one of aluminum oxide whiskers, silicon nitride whiskers, silicon carbide whiskers, carbon nano tubes and graphene or the combination of several of the aluminum oxide whiskers, the silicon nitride whiskers, the silicon carbide whiskers, the carbon nano tubes and the graphene. The invention further provides a high-tenacity polycrystalline blade prepared from the high-tenacity polycrystalline composite material and a preparation method of the high-tenacity polycrystalline blade. The preparation method comprises the steps of isostatic forming, vacuum heat treatment activation, and high-temperature and high-pressure sintering. The high-tenacity polycrystalline blade has good tenacity and cutting performance, and the preparation technique is simple and easy to implement.

The invention discloses a phase change energy storage thermoplastic composite material, which comprises the following components in percentage by weight: 5 to 30 percent of polypropylene, 10 to 40 percent of ethylene-propylene-diene monomer (EPDM), 20 to 75 percent of paraffin, 0.5 to 10 percent of cross-linking agent, 0.01 to 2 percent of antioxidant, 0.01 to 10 percent of processing aid and 0 to 10 percent of crosslinking aid. The components are subjected to dynamic vulcanization in one step in melting mixing equipment to obtain the phase change energy storage thermoplastic composite material. The phase change energy storage thermoplastic composite material has the processing characteristics of thermoplastic plastics, and has high breaking elongation, moderate hardness and flexibility; and the paraffin is coated in the crosslinked EPDM to form microcapsules, and the phase change energy storage thermoplastic composite material is excellent in shape retaining performance and low in percolation ratio and has the better application prospects in fields of construction, chemical engineering, energy and the like.

The invention provides a long-fiber enhanced thermoplastic composite material vane used for a wind energy generator, which is composed of a long-fiber enhanced thermoplastic composite material, wherein the long fiber is glass fiber, carbon fiber or the composite fiber of glass fiber and carbon fiber; the content of the long fiber in the vane is 32-75wt%, the reservation length of the long fiber is 2.8-25mm and can form a mutually-tangled three-dimensional net structure characteristics, and therefore the product has a higher impact resistance, and especially has low-temperature impact resistance; the preferable size of the vane manufactured by the injection molding technology is 46-2200mm; the vane surface is provided with a primer layer; and the primer layer is sprayed with a UV (ultraviolet) photocuring light shade surface. In the product, the vane is manufactured by the injection molding technology, and the product has the excellent performances of simple production technology, low cost, long service life, low specific gravity, low-temperature warping deformation resistance, stable size, no water and moisture adsorption, high strength, low-temperature impact resistance, scratch resistance, ultraviolet aging resistance, chemical solvent corrosion resistance and the like.

The invention discloses a preparation method of a mesoporous silica in situ doped acrylic resin bone cement composite for enhancing durable release capacity of medicines. The preparation method comprises the steps of firstly, mixing an amino silicon dioxide nanometer material with bone cement liquid to obtain a mixture, mixing the mixture with a bone cement solidifying agent, and in the process ofa polyreaction, performing in-situ introduction of the mesoporous silica nanometer material containing medicines; and uniformly mixing a mesoporous silica material with the liquid agent, and besides,enabling amino and carboxyl in bone cement acrylic resin to form electrostatic interaction to realize uniform and stable distribution in the bone cement, and achieve the purpose of durable and uniform release of the medicines. The prepared composite is high in operability, self spaces can be used for efficiently loading the medicines, and unique 2-8-nm mesoporous bore diameter is designed to enable the medicines distributed in the deep layer of the bone cement to be slowly released to the outside of the cement, so that durable and efficient release of the medicines is realized, besides, the characteristic and the function of the bone cement can be individually improved, and the biocompatibility and the anti-infection characteristic of the bone cement can be improved.

The invention relates to the field of porous materials, and particularly discloses a high-thermal-conductivity pure porous silicon carbide material, and a preparation method and application thereof. The porous silicon carbide material is constructed by a three-dimensionally connected pure silicon carbide network and a three-dimensionally connected pore network in an interfingering mode, wherein the silicon carbide network is composed of silicon carbide crystal grains connected through grain boundaries to ensure high thermal conductivity of the porous silicon carbide material. By adopting the structure design and preparation method of the high-thermal-conductivity pure porous silicon carbide material, the high-thermal-conductivity pure porous silicon carbide material with adjustable pore size and porosity height can be obtained. The pure porous silicon carbide material is a novel porous material with simple preparation technology and high efficiency, has a wide range of application prospects, and can be used in the following fields such as composite material reinforcements, heat dissipation materials, electromagnetic shielding materials, wave-absorbing materials, filters, biologicalmaterials, catalytic carrier materials, electrode materials, and sound absorbing/noise reducing materials.

The invention discloses a coating material for sealing the coal wall of a gob-side coal roadway. The coating material comprises 100 parts of cement, 3-6 parts of an environmentally-friendly interfacepolymer solid material and 10-15 parts of a mineral mixture and other additives, the environmentally-friendly interface polymer solid material comprises, by mass, 100 parts of an acrylate polymer solid and 8-9 parts of polyethylene synthetic resin, and the mineral mixture and other additives comprise, by mass, 5-10 parts of silica fume, 10-15 parts of common fly ash or slag, 1-2 parts of a superplasticizer and trace parts of basalt chopped fibers. The coating material is a novel composite material for guniting, and meets the requirements for plugging the coal wall of the gob-side coal roadway.

The invention discloses application of an Mg/Fe oxide modified biochar nano composite material in removing antibiotics, the Mg/Fe oxide modified biochar nano composite material takes biochar as a matrix, and Mg/Fe oxide is loaded on the surface of the biochar; the application method comprises the following steps: mixing the Mg/Fe oxide modified biochar nano composite material with ammonium persulfate and an antibiotic solution, and reacting to complete the removal of the antibiotics. The Mg/Fe oxide modified biochar nano composite material has the advantages of low price, high efficiency, large-scale production, high adsorption capacity, capability of quickly realizing solid-liquid separation, environmental friendliness and the like, is applied to activating persulfate to degrade antibiotic pollution in a water body, and is good in removal effect and high in reaction speed.

The invention provides a cobalt iron oxide-cobalt phosphate electrocatalytic oxygen evolution composite material, and a preparation method and application thereof. The composite material is a composite material of a cobalt iron oxide nano-square block and a cobalt phosphate nano-array growing on foamed nickel in situ, the expression of the composite material is CoFeO-CoPi (NF), and the composite material belongs to the technical field of new energy nano-material synthesis. The cobalt phosphate nano-array growing on foamed nickel is taken as a template and a cobalt source, ferricyanide is introduced to form cobalt ferricyanide nano-square blocks on the cobalt phosphate nano-array, and the cobalt ferricyanide nano-square blocks on the cobalt phosphate nano-array are calcined at a high temperature in an air atmosphere to obtain the composite material of cobalt iron oxide and cobalt phosphate. The synthesis method simply and effectively compounds the cobalt phosphate and cobalt iron oxide,and enriches the compounding synthesis method of multi-metal oxide and oxysalt. The material shows excellent electro-catalytic oxygen evolution performance, has obvious morphology conversion after electro-catalytic oxygen evolution, and is suitable for the field of new energy development.

The invention relates to a photocatalytic self-cleaning coating as well as a preparation method and application thereof, the photocatalytic self-cleaning coating is prepared from a photocatalytic material, a nano SiO2 film forming material, a coating regulator and a solvent, and is characterized by being prepared from the photocatalytic material, the nano SiO2 film forming material, the coating regulator and the solvent, a film layer formed by coating has photocatalytic self-cleaning, anti-reflection and anti-reflection and surface hardening functions; the coating comprises the following components in percentage by mass: 0.2%-2% of a photocatalytic material, 3%-8% of a nano SiO2 film forming material, 0.01%-0.2% of a coating regulator and 90%-95% of a solvent, the photocatalytic material is a composite material of carbon, nitrogen and phosphorus doped nano TiO2 and phosphorus doped active g-C3N4, and is formed by polymerizing and activating a mixture of carbon, nitrogen and phosphorus doped nano TiO2 gel, urea, melamine and phosphoric acid and performing ultrasonic stripping in an ethanol solvent; the nano SiO2 film forming material is acidic hydrosol of methyl silicone resin and tetraethoxysilane. The photocatalytic self-cleaning coating disclosed by the invention can prevent the surface of solar cell glass from being polluted, and the light transmittance and the surface hardness are improved.

The invention relates to a grease-based epoxy polymer and an epoxy copolymer, and preparation methods thereof. The grease-based epoxy polymer and the epoxy copolymer are prepared from a grease-based monomer based on vegetable oil or fatty acid. The grease-based monomer based on vegetable oil or fatty acid is polymerized or is copolymerized with other monomers to obtain the grease-based polymer orcopolymer, and unsaturated double bonds of the grease-based polymer or copolymer are epoxidized by peroxide to obtain the grease-based epoxy polymer. The grease-based epoxy polymer with different properties can be prepared by controlling the number of the unsaturated double bonds, the polymerization degree of the polymer, the epoxidation degree of the polymer and the proportions of two monomers inthe copolymer in the preparation method. The grease-based epoxy polymer can replace or partially replace a fossil raw material to prepare thermosetting materials and high-performance composite materials.

The invention discloses a preparation method of a SnS2 nanosheet loaded graphene-based nano composite material, which comprises the following steps: step 1, dispersing graphene oxide nanosheets in deionized water to prepare a graphene oxide solution; 2, dissolving tin tetrachloride in deionized water, and adding thiourea as a sulfur source and a reducing agent; 3, adding the graphene oxide solution in the step 1 into the solution obtained in the step 2, and carrying out mixing treatment through ultrasonic waves and transferring a mixture of the two solutions subjected to ultrasonic treatment into a hydrothermal reaction kettle for reaction to obtain a precipitate; and 4, centrifuging, washing, drying and grinding the precipitate obtained by the reaction in the step 3 to obtain the graphene nanosheet/tin disulfide composite nanomaterial. The graphene nanosheet/tin disulfide composite nanomaterial prepared by the method has higher capacity and stability when being used as a sodium storage electrode material.

The invention discloses a polypyrrole coated Ni-Co-S nanoneedle array composite material. Nickel acetate, cobalt acetate, urea and thiourea are used as raw materials for preparing an NF/NiCo2S4 nanoneedle array material; polypyrrole is used as a conductive polymer for preparing the polypyrrole coated Ni-Co-S nanoneedle array composite material through an adhesive and a curing agent, wherein the nanoneedle structure has a shell-core structure, the core structure is NiCo2S4, and the shell structure is polypyrrole. A preparation method of the NF/NiCo2O4 nanoneedle array material comprises the following steps: 1) preparing the NF/NiCo2O4 nanoneedle array material; (2) preparing the NF/NiCo2S4 nanoneedle array material; (3) preparing the polypyrrole coated Ni-Co-S nanoneedle array composite material. When the material is applied as a supercapacitor electrode material, the window voltage is 0-0.5 V, and the specific capacitance is 1,800-1,900 F/g when the discharge current density is 1A/g. The nanoneedle array grown on the surface of the foamed nickel carrier is regular and ordered in structure and large in specific surface area, so the electron transmission is facilitated; the coating of the conductive polymer is realized by adopting a direct dripping method, so the electrochemical performance is effectively improved.

The invention provides a high-drawing-resistance aerogel composite material and a preparation method thereof, and relates to the field of aerogel. The preparation method comprises the following steps: 1, a fiber composition serves as a core material, fiber cloth or fiber gridding cloth is laid on the upper face and the lower face of the core material, and the fiber cloth or the fiber gridding cloth laid up and down and the middle core material are sewn up and down through fiber lines to form three-dimensional woven fibers. and 2, the three-dimensional woven fibers obtained in the step 1 are taken as a reinforced base material and soaked in sol, and gelling, aging, modifying and drying are carried out to obtain the high-drawing-resistance aerogel composite material. Or the fiber composition is used as a reinforcing base material and is gelled, aged, modified and dried to obtain an aerogel composite material, and then fiber cloth or fiber gridding cloth is sewn on the upper face and the lower face of the aerogel composite material to form the final high-drawing-resistance aerogel composite material. According to the method, the anti-drawing strength of the aerogel material is remarkably improved, and the anti-drawing strength of the aerogel composite material is improved to 0.5 MPa from 0.08 MPa.

The invention discloses a preparation method and application of a nanocomposite oxygen-doped molybdenum disulfide/titanium dioxide nanotube array. According to the principle of the preparation method, a TiO2 nanotube array prepared through an anodic oxidation method is placed in a mixed solution containing ammonium heptamolybdate, thioacetamide, sodium dithionite and ammonia water, MoOxSy nanoparticles are deposited on the TiO2 nanotube array through a simple chemical bath deposition method, and the MoOxSy/TiO2 nanotube array is obtained. The method has the advantages that the chemical bath deposition method is simple in process, mild in condition, energy-saving and environment-friendly. The prepared MoOxSy/TiO2 nanotube array grows on a titanium foil substrate in situ, is vertically arranged, is uniform in size and can be directly used as a photoelectrode for photoelectrocatalytic degradation of tetracycline hydrochloride, and the degradation efficiency of the MoOxSy/TiO2 nanotube array is 1.5 times that of the TiO2 nanotube array.

The invention belongs to the technical field of fingerprint identification, and particularly relates to carbon dot zeolite composite material fingerprint developing powder and a preparation method thereof. The fingerprint developing powder disclosed by the invention is obtained by loading carbon dots by taking Silicalite-1 zeolite as a carrier, and is marked as a carbon dot@Silicalite-1 zeolite composite material; on the basis of the amount of the Silicalite-1 zeolite, the loading amount of the carbon dots is 2-10%. The preparation method comprises the steps: mixing tetrapropylammonium hydroxide, a sodium hydroxide solution, tetraethoxysilane and deionized water according to a certain proportion, uniformly stirring, then adding carbon dot powder, aging at room temperature, then heating and stirring, and centrifuging, washing, drying and grinding the reacted product to obtain the carbon dot@Silicalite-1 zeolite composite material. The composite material can be used for fingerprint detection and imaging of developed fingerprints under an ultraviolet lamp.

The invention discloses a novel method for preparing a recyclable graphene composite titanium dioxide nano material. The preparation method is characterized by comprising the following steps of: firstly, preparing nickel ferrite by a hydrothermal method, preparing graphite oxide by a Hummers method, and synthesizing the nickel ferrite, graphene and titanium dioxide into the composite material by ahydrothermal method in one step. The preparation process is easy to operate, reaction conditions are easy to control, the requirement for equipment is low, the loss is low, high-temperature calcination is not needed, the synthesis cost is reduced, good market prospects are achieved, and the prepared composite material has excellent photocatalytic performance, has magnetism, is convenient to recycle, can be repeatedly used and improves economic benefits.

The invention provides a flexible liquid metal pattern based on laser activation selective metallization and a preparation method thereof, and belongs to the field of flexible sensors. The preparation method comprises the following steps of: step 1, preparing a polymer/laser absorbent flexible composite material; step 2, irradiating the surface of the polymer/laser absorbent flexible composite material by using laser, forming an activated pattern in an irradiation area, and then plating metal in the irradiation area to obtain a metal pattern; and step 3, immersing the polymer/laser absorbent flexible composite material in an acidic or alkaline solution, coating the metal pattern with liquid metal, so as to obtain the flexible liquid metal pattern. The preparation method does not need a mask, and is good in production flexibility, simple to operate and controllable in cost. The flexible liquid metal pattern prepared by the method is good in flexibility, has excellent conductivity under bending and stretching conditions, is excellent in self-repairability and acid/alkali corrosion resistance, and is good in application prospect in the field of flexible sensors.

The invention belongs to the technical field of preparation of degradable materials, and particularly relates to a preparation system of a biodegradable composite material. The preparation system comprises a cooling water tank, and a drying device is fixedly mounted at one end of the cooling water tank; the drying device comprises a supporting frame, a motor, a first wiping roller, a second wiping roller and dewatering plates; each of the first wiping roller and the second wiping roller comprises a roller, an elastic supporting column and a wiping plate; the rollers are rotatably connected with a side plate of the supporting frame; the wiping plates are uniformly arranged on the circumferential outer side of a rotating shaft; the dewatering plates are arranged on one side of the first wiping roller and one side of the second wiping roller; and the dewatering plates are fixedly connected with the supporting frame. In the prior art, fan drying is adopted, water is evaporated and lost, water resources are wasted, impurities in water are condensed on the material, and product quality is affected, while in the preparation system, the drying device is arranged, so that the biodegradable composite material is rapidly dried, water loss is reduced, and the surface cleanness of the material is ensured.

The invention discloses a method for preparing a feeding nozzle for a continuous high-purity alumina melting furnace. The continuous high-purity alumina melting furnace consists of a cooling water jacket furnace shell 1, a carbon fiber heat insulation material 2, a ceramic inner container seat 3, graphite heating elements 4, a ceramic inner container 5, the feeding nozzle 6, a furnace body upper cover 7, an upper cooling cavity 8, a hearth 9, a lower cooling cavity 10 and a furnace body lower cover 11, wherein a cooling water jacket is adopted in the cooling water jacket furnace shell; and the feeding nozzle for the continuous high-purity alumina melting furnace is made of a composite material prepared from reactive sintered aluminum nitride and hafnium boride and used at the temperature of between 1,600 and 2,200 DEG C in the atmosphere of nitrogen. The feeding nozzle for the continuous high-purity alumina melting furnace have the advantages of uniform microstructure, high strength, high overall reliability, high oxidation resistance, high-purity alumina pollution prevention, capability of being used for long time at the temperature of 2,200 DEG C, continuous production, high production efficiency and the like.