1574 results about "Particle material" patented technology

One ozone concentrating chamber is provided therein with a part of a cooling temperature range where ozone can be selectively condensed or an oxygen gas can be selectively removed by transmission from an ozonized oxygen gas, and a part of a temperature range where condensed ozone can be vaporized, and condensed ozone is vaporized by moving condensed ozone with flow of a fluid or by gravitation to the part where condensed ozone can be vaporized, whereby the ozonized oxygen gas can be increased in concentration. Such a constitution is provided that a particle material 13 for condensation and vaporization filled in the ozone concentrating chambers 11 and 12 has a spherical shape of a special shape with multifaceted planes on side surfaces, or an oxygen transmission membrane 130 capable of selectively transmitting an oxygen gas in an ozone gas is provided.

An apparatus for filtering molten metal held in a vessel before the metal enters the dosing tube. The filtering apparatus includes an attachment portion that mounts to the dosing tube, a filter body connected to the attachment portion and a planar surface attached to an end of the filter body opposite the attachment portion. The filter body can include a beveled end opposite the attachment portion where the planar surface is attached. The apparatus can be made from a bonded-particle material made from silicon carbide or aluminum oxide held together by an aluminum-resistant binder.

There has been a problem in conventional Si-type floating-gate type nonvolatile semiconductor memory devices that the charge retention characteristic is low due to insufficiently large electron affinity of Si, therefore improvement of the memory performances, such as scaling down of a memory cell and increasing operation speed, have been difficult to be achieved due to the essential problem. In order to solve the above problem, in the nonvolatile semiconductor memory device of the present invention, a material having large work function or large electron affinity or a material having a work function close to that of semiconductor substrate or of a control gate, is employed for a floating gate retaining charges. Further, an amorphous material having small electron affinity for an insulating matrix is used. Further, at a time of deposition of charge retention layer, the supply ratio of the nano-particle material and the insulating matrix material, such as the mixture ratio of materials of both phases in a target in a sputtering method, is adjusted. By these methods, the charge retention characteristic of the floating-gate type nonvolatile semiconductor memory device can be improved, and the above-mentioned problem of the nonvolatile semiconductor memory device can be solved.

A nanoparticle sensor is capable of detecting and recognizing single nanoparticles in an aqueous environment. Such sensor may find applications in broad areas of science and technology, from the analysis of diesel engine emissions to the detection of biological warfare agents. Particle detection is based on interferometric detection of multi-color light, scattered by the particle. On the fundamental level, the detected signal has a weaker dependence on particle size (ÿ R³), compared to standard detection methods (ÿ R⁶). This leads to a significantly larger signal-to-noise ratio for smaller particles. By using a multi-color or white excitation light, particle dielectric properties are probed at different frequencies. This scheme samples the frequency dependence of the particle's polarizability thereby making it possible to predict the composition of the particle material. The detection scheme also employs a heterodyne or pseudoheterodyne detection configuration, which allows it to reduce or eliminate noise contribution from phase variations, which appear in any interferometric measurements.

The invention relates to intelligent gel particles capable of being crosslinked again under a stratum condition and a preparation method and application of the intelligent gel particles. The intelligent gel particles are prepared by acrylamide, anionic monomer, cationic monomer, N, N-vinyl pyrrolidone, pH regulator, initiator, cross-linking agent I, cross-linking agent II, stabilizer, nano particle material and water. The intelligent gel particles are applicable to oil field profile control and water plugging, filtration loss control and/or plugging during a drilling process and drilling and completion plugging, and the gel particles can be crosslinked again under the stratum condition after entering a stratum to form high-strength gel so as to achieve effective plugging.

The invention belongs to the field of nano particle or polymer composite material preparation and particularly relates to a dopamine compound modified or coated nano particle modified polymer composite material and a preparation method thereof. The composite material is composed of nano particles with surfaces modified or coated by dopamine compound and a high molecular polymer matrix. The nano particles with the surfaces modified or coated by the dopamine compound are uniformly scattered in the high molecular polymer matrix. According to the dopamine compound modified or coated nano particle modified polymer composite material, the dopamine compound modified or coated nano particles are utilized, the dopamine compound can aggregate spontaneously on the surface of a nano particle material to form a thin film to enable the surfaces of the nano particles to be connected with a function group such as hydroxyl and amidogen with strong activity, the compatibility of the nano particles in the high molecular polymer can be increased, and the dopamine compound is favorable for causing the nano particles and the high molecular polymer matrix to further generate secondary reaction. The dispersibility of the nano particles is good, and the stability is good in the dopamine compound modified or coated nano particle modified polymer composite material, and the comprehensive performance of the composite material can be improved remarkably.

The invention relates to a method for applying fluids, especially particle material, on a area that is to be coated, wherein the fluid is applied on the area to be coated in front of a blade when observed from the direction of forward movement of the blade and said blade is then displaced on the applied fluid. The method is characterized in that the blade performs an oscillation similar to a rotational movement.

Composites and methods for making the same. A mixture of clay material and a light-weighting material is formed into a composite particle. An optional performance-enhancing active is coupled to the composite particle material before, during, or after the particle-forming process, homogeneously and/or in layers. Preferred methods for creating the composites include a pan agglomeration process, a high shear agglomeration process, a low shear agglomeration process, a high pressure agglomeration process, a low pressure agglomeration process, a rotary drum agglomeration process, a mix muller process, a roll press compaction process, a pin mixer process, a batch tumble blending mixer process, an extrusion process, and a fluid bed process.

The present invention belongs to the field of polymer material technology. Inorganic nano Sio2 partticle, organic olefin monomer and coupler as raw materials are subjected to emulsion polymerization or suspension polymerization in water as medium in the presence of various emulsifiers and initiator, so that the olefine polymer is grafted to the surface of inorganic nano SiO2 particle to form inorganic nano SiO2 particle core-organic olefin polymer shell structure. The composite particle is spherical, has homogeneous particle size smaller than 100 nm, and has high grafting rate and high grafting efficiency. The prepared compoisite olefin polymer/SiO2 particle material has wide application in the development of nano technology.

The invention discloses a fluorescent quantum dot micro-nano encapsulated composite material structure. The composite material structure comprises fluorescent quantum dots, a mesoporous particle material with a nano lattice structure, and a barrier layer, wherein the fluorescent quantum dots are distributed in the mesoporous particle material, and the barrier layer coats the external surface of the mesoporous particle material. The composite material structure can effectively retard the aggregation of the quantum dots, and the barrier layer coating the surface prevents the erosion of water and oxygen small molecules and improves the compatibility and stability of composite fluorescent particles, thereby greatly prolonging the service life of the fluorescent quantum dot micro-nano encapsulated composite material.

The invention discloses a silicon monoxide composite cathode material for a lithium ion battery, and a preparation method of the silicon monoxide composite cathode material, aiming at improving the cycle performance. The composite cathode material comprises the components by mass percent: 10-30% of composite particle material and 70-90% of natural graphite or artificial graphite, wherein the composite particle material is silicon monoxide covered by a carbon nano tube and an amorphous carbon coating layer. The method comprises the following steps of: forming the carbon nano tube and the amorphous carbon coating layer on the surface of silicon monoxide to obtain composite particles, and mixing the composite particles with the graphite. Compared with the prior art, the preparation method enables cracking carbon to be covered on the surfaces of silicon monoxide particles, so that the volume effect of the silicon monoxide particles can be effectively inhibited in the charge-discharge process of a battery, the cycle performance is good, the specific capacity is more than 500mAh/ g, and the capacity retention ratio is more than 85% after the circulation is carried out for 100 times; and the preparation method is simple in preparation technology, low in raw material cost and suitable for the cathode material for the high-capacity lithium ion battery.

The invention relates to a producing method of polyolefin foaming pellets. The method includes putting polyolefine resin compound and foaming agent into an extruder and extrudes the mixture from the die orifice of the extruder until they are fully mixed, and then the mixture is directly cut into pellets by a cutter arranged at the die orifice. The pelletizing mode is die surface hot cutting, including underwater pelletizing, water ring (water spray) palletizing and pneumatic pelletizing. The components and parts by weight of the polyolefin foaming pellets are 50 to 97 percent by weight of polyolefin resin, 0 to 49 percent by weight of polyolefin resin modifier and 0.5 to 3 percent by weight of nucleator. The effect of the invention is that the method adopts the pelletizing mode of die surface hot cutting. By adding the polyolefin resin modifier, the temperature of extruder body is unnecessary to be strictly controlled and the cooling of the foaming pellets is effectively carried out to obtain the ideal foaming pellets. The pellets have the advantages of excellent resilience, wide adjustable range of foaming multiplying power, superior performance and simple post shaping, thus overcoming the defects of traditional extruded foaming pellets.

The invention provides a composite type leakage plugging agent for an oil-based drilling fluid. The composite type leakage plugging agent for the oil-based drilling fluid comprises the raw materials by the weight percentage: 20%-50% of a leakage plugging material, 0.5%-2% of a fiber material, 5%-20% of an oil swelling material, 20%-40% of a lipophilic superfine particle material, and 10%-20% of a lipophilic flaky material. The leakage plugging agent mainly aims at leakage prevention and plugging requirements of permeable formation and fractured leakage formation encountered by an oil-based drilling fluid system during drilling, and the compressive strength can reach 7 MPa for 5 mm cracks; in sand bed evaluation tests, the invasion depth reduction rate is more than 90%. The composite type leakage plugging agent can significantly improve the leakage plugging success rate of the oil-based drilling fluid and enhances the formation bearing ability.

The present invention discloses a high-performance flame-proof abrasion-resisting composite material which is prepared mainly by the components of particle material alumina or/and corundum or/and mullite 50-70 parts; hard particle 5-25 parts; binding agent 8-25 parts; aluminum oxide micro powder or/and silicon micronized quartz powder 8-15 parts and surfactant 0.1 parts. The composite material is developed according to the scientific knowledge obtained in the long-term researching and producing for the flame-proof abrasion-resisting composite material in our company and absorbing the latest accomplishment of the present material science, the material has the advantages of increasing the high-temperature bonding strength and toughness of the composite material, increasing the binding ability of the interface between the composite material and the equipment, facilitating the two sides forming a compact and high-strength whole body, optimizing the capability of the composite material in the high-temperature state, prolonging the service lifetime of the equipment, reducing the number of the breakdown maintenance, reducing the material consumption and the labor intensity of the worker thereby obtaining the purpose of increasing the economic benefit of the enterprise.

A particulate metering system includes a set of blocking members that can be independently controlled to block or allow the flow of particulate material to a roller assembly that collects the particulate material and releases the material to a series of distribution channels.

The invention discloses modified gasoline desulfurization adsorbent and a preparation method thereof and relates to a gasoline desulfurization adsorbent and a preparation method thereof. The adsorbent is used for deeply removing thiophene as well as a derivative thereof and benthiophene in the gasoline; the adsorbent is 13X molecular sieve adsorbent loaded with Ag ion; the sliver element content is 3%-5% of the total weight of the adsorbent; and the silver element is in an ionic form. The preparation method of the modified gasoline desulfurization adsorbent comprises the following steps of: roasting and pre-treating adsorbent carrier particle materials; carrying out ion exchange between the carrier particles with the soluble silver salt; washing the loaded carrier particles; drying the particle materials; and roasting and activating the dried particles. According to the modified gasoline desulfurization adsorbent and the preparation method thereof disclosed by the invention, the adsorbent carrier is easily available and cheap; the preparation method is simple and easy to implement; the service life of the adsorbent is longer and can be circulated and regenerated; and the regenerated adsorbent has better desulfurization performances.

The invention provides a wood-plastic material with distiller's grain as a reinforcing phase, and a manufacturing method thereof. According to the invention, the distiller's grain is subjected to pretreatment, wherein the distiller's grain is crushed into powder with a relatively small particle size; the distiller's grain powder, plastic, a modifying agent, a coupling agent, a stabilizing agent, a lubricating agent, an auxiliary material, and other raw materials are mixed according to different proportions; an obtained mixture is subjected to extrusion granulation by using an extruder, such that a wood-plastic particle material is obtained; or the mixture is directly extruded for preparing different products such as wood-plastic sheet materials, wood-plastic section bars, and wood-plastic pipe materials; or other products can be obtained by hot-pressing molding or injection molding. The wood-plastic sheet material, section bars and pipe materials with the distiller's grain base can be applied in large-scale continuous batch productions. The material is advantaged in high yield, low cost, and high cost performance. Distiller's grain and plastic or waste plastic are adopted as the main raw materials of the wood-plastic material, such that the cost of the series of wood-plastic material is substantially lower than various wood-plastic materials in current markets, which are produced by using wood powder or bamboo powder. The mechanical strength of the wood-plastic material provided by the invention is not lower than that of the wood-plastic materials in current markets. The series of wood-plastic material can be widely used. According to the invention, large amounts of distiller's grain and waste plastic are utilized, such that pollution of the distiller's grain and waste plastic to the natural environment can be solved, and resource recycling and reutilizing is realized.

The invention discloses kudzuvine root porous particles and application thereof to cigarettes. The kudzuvine root porous particles of 20-60 meshes are prepared by taking kudzuvine root powder of which the water content is 5-6 percent and the particle diameter is 100-160 meshes as raw materials and taking one or more of gelatin, polyvinylpyrrolidone and sodium carboxymethyl starch as bonding agents with a fluidized bed top spray process. The particles are rough in surfaces and are large in specific surface areas, the effective contact area between a particle material and cigarette smoke is increased remarkably, and hydrocyanic acid and crotonaldehyde in cigarette smoke can be adsorbed selectively; the irritation of the cigarette smoke is effectively lowered, and remaining taste is improved; meanwhile, the effect of improving the sweet taste of smoke is enhanced. The kudzuvine root porous particles and the application thereof to the cigarettes have the advantages of simple production process, high operability, high standardability, ready availability of raw materials, low cost, convenience in the realization of industrial production and good application prospect.

A wear-resistant coating material includes a main agent including 10-60 parts of epoxy resin, a curing agent including 5-50 parts of an organic amine substance and 0.5-18 parts of an accelerator, and 0.5-20 parts of a coupling agent, 5-20 parts of a toughening agent, 100-600 parts of an abrasive material, 10-60 parts of fibers and 5-20 parts of a thixotropic agent which are included in the main agent and/or the curing agent. In an actual use process, the wear-resistant coating material enables the life of a new specimen to be extended to 1.5-2 times that of an original specimen, sometimes, enables the life to reach 4 times that of the original specimen under a working condition with a larger-particle material, and also can be repeatedly repaired.

The invention belongs to the technical field of chemical equipment, and specifically discloses a solid particle chemical raw material crushing recycling device. The solid particle chemical raw material crushing recycling device comprises a supporting frame, wherein a crushing device is arranged on the top of the supporting frame; the crushing device is used for performing preliminary crushing operation on solid particles; a grinding device is arranged inside the supporting frame for re-crushing the solid particles, so that the crushing effect of the crushing recycling device is improved; the bottom end of the grinding device is equipped with a slide plate; a dropping hole is formed in the slide plate; the lower end of the slide plate is equipped with a conveying device; and a discharge hole is formed in the bottom end side surface of the supporting frame. According to the solid particle chemical raw material crushing recycling device disclosed by the invention, the grinding device is arranged, a movable grinding module is arranged on the grinding device, and an arc-shaped movable plate swings in a swing slot through a movable column and a compression spring, so that when the grinding device grinds, the movable grinding module can sufficiently crush particle materials adhered on the grinding block, and therefore, the grinding device is prevented form a blocking phenomenon.