33results about How to "Reduce the amount of particles" patented technology

The invention discloses a single-component extrusion molding conductive rubber for electromagnetic shielding and a preparation method of the single-component extrusion molding conductive rubber, belonging to the technical field of electromagnetic shielding materials. The single-component extrusion molding conductive rubber is composed of dendritic silver coated copper powder, silvered glass fiber, polydimethylsiloxane containing vinyl by rubber base body, reinforcing agent gaseous phase white carbon black, alkynol inhibitor, metal platinum catalyst, and cross-linking agent methylhydropolyorganosiloxane. The preparation method comprises the following steps: pretreatment is carried out to the dendritic silver coated copper powder and the silvered glass fiber through amido coupling agent methyl organodisilane according to the formula, the rubber base body and the gaseous phase white carbon black are added in a vacuum kneading machine, are mixed uniformly and are added in a double-planet mixing plant, and then the alkynol inhibitor, the metal platinum catalyst and the treated electric conduction powder are mixed uniformly to form a component 1; the treated electric conduction powder is added in a cross-linking agent and is mixed uniformly to form a component 2; and two components in the double planets are mixed to form the single-component on-site forming electromagnetic shielding silicon rubber. The rubber has good shielding performance and good mechanical property.

The invention discloses a material chemical processing grinding device and relates to the technical field of chemical material grinding. The material chemical processing grinding device comprises a supporting frame. The supporting frame is horizontally and fixedly provided with a fixing plate. The fixing plate is provided with a grinding head matched with a grinding groove. The bottom of the grinding groove is evenly provided with a plurality of material falling mesh holes. A material falling hopper is arranged under the grinding groove. The rotation direction of a rotating shaft is opposite to that of the grinding groove. The supporting frame is provided with a discharging hopper with a lower end opening located above the grinding groove. According to the material chemical processing grinding device, rotary grinding is carried out on chemical materials in the grinding groove through rotation of the grinding head, the grinding groove rotates during the grinding period, the rotation direction of the grinding groove is opposite to that of the grinding head, and the grinding speed of chemical material particles is greatly increased; and during the grinding period, particles in a certain size fall through the material falling mesh holes, timely separation of the particles in a certain size from material particles in a relatively large size is achieved, ,the number of the material particles in the grinding groove is gradually reduced, accumulation of the material particles is avoided, and the grinding effect is greatly improved.

The invention provides screening-ball-milling method sheet metal powder and a preparation method thereof. The preparation method of the screening-ball-milling method sheet metal powder comprises the following steps that every 25-50 meshes of raw material metal powder are screened into metal powder of different meshes; the metal powder, ball milling steel balls and metal powder surface treatment auxiliaries are put into ball milling equipment according to different meshes, vacuumizing and nitrogen filling are conducted, ball milling is conducted according to different meshes time by time, and ball milling time is adjusted according to the particle size of the screened metal powder; and all grades of ball-milled powder is collected and is graded again in an airflow classification mode. With the adoption of the technical scheme of the screening-ball-milling method sheet metal powder and the preparation method thereof, the thickness of the obtained sheet metal powder is uniform, the yield of over-milled metal powder can be reduced substantially, meanwhile, the quantity of milled coarse metal particles is small, the coarse metal particles can be milled again into qualified products, the finished product rate is high and can reach 100%, and production efficiency is high.

Methods and apparatus for producing a semiconductor on glass (SOG) structure include: bringing a first surface of a glass substrate into direct or indirect contact with a semiconductor wafer; heating at least one of the glass substrate and the semiconductor wafer such that a second surface of the glass substrate, opposite to the first surface thereof, is at a lower temperature than the first surface; applying a voltage potential across the glass substrate and the semiconductor wafer; and maintaining the contact, heating and voltage to induce an anodic bond between the semiconductor wafer and the glass substrate via electrolysis.

The invention relates to the technical field of air purification, and discloses a dust and fog removing device which comprises a dust and fog remover. A blade of the dust and fog remover is a conductive blade, a water collection groove corresponding to the conductive blade is a conductive water collection groove, the end of the conductive blade is arranged in the conductive water collection groove, and both the conductive blade and the conductive water collection groove are grounded. According to a smoke dust purifying system and the dust and fog removing device of the smoke dust purifying system, liquid drops in smoke and fine liquid drops and fine particulate matter which have negative charge, particularly liquid drops and particulate matter with the diameter being 20 micrometers or below can be intercepted, and therefore the liquid drop volume and dust capacity in smoke can be greatly reduced.

The invention relates to a stable 3-n-butylphthalide high-capacity injection and a preparation method thereof. The stable 3-n-butylphthalide high-capacity injection contains dl-3-n-butylphthalide or l-3-n-butylphthalide, a surface active agent, an osmotic pressure regulator, a pH regulator, a stabilizer, and water for injecting, wherein the surface active agent is selected from one or more of polyethylene glycol-15-hydroxystearate, polysorbate-80, poloxamer188 and lecithin. The 3-n-butylphthalide high-capacity injection is stable in quality, does not contain activated carbon, and has few particles and higher safety, and the quantity of the particles does not increase along with storage time; the content of 3-n-butylphthalide is high, and therefore the 3-n-butylphthalide high-capacity injection can be directly applied to intravenous injection, and accordingly meets requirements for clinical drug delivery; and a preparation technology is simple, ensures the stability of the injection andis high in operability, and thus industrial production is easily achieved.

The invention provides an in-mill screening and lifting device and a vertical roller mill. The in-mill screening and lifting device is applied to the vertical roller mill. The vertical roller mill comprises a shell, a grinding disc and a plurality of grinding rollers. The device comprises a collecting hopper, wherein the collecting hopper is arranged on the periphery of the grinding disc between the two adjacent grinding rollers, and a gap is formed between the inner side of the collecting hopper and the outer wall of the grinding disc; a rotary screen arranged on the outer side of the collecting hopper, wherein the bottom end part of the rotary screen is located below the collecting hopper, and the rotary screen is used for lifting materials discharged from the collecting hopper to the top end part of the rotary screen; a discharging chute, wherein the discharging chute is arranged above the grinding disc in a posture that the outer part is high and the inner part is low, and the top end part of the discharging chute is positioned under the top end part of the rotary screen; and a rotary screen driving part which is arranged on the outer side of the vertical roller mill and is in transmission connection with the rotary screen. The in-mill screening and lifting device and the vertical roller mill have the characteristics of a compact structure, convenience in installation and use, stability in operation and simplicity in maintenance. High economic value and social benefits are achieved in the aspects of energy conservation and emission reduction.

The invention relates to a high speed deposition method and an apparatus for the same. The deposition method comprises the following steps: carrying out a plasma treatment on a substrate by alternatively using a source gas and a reactant gas; and making the source gas and reactant gas carry out reactions on the surface of the substrate so as to form an inorganic film on the substrate; wherein the plasma treatments of source gas and reactant gas are independently carried out in separated plasma modules; the source gas comprises inert gas and precursor; and the precursor comprises free silicon, aluminum, zinc, and metals from groups of silicon, aluminum, and zinc.

The invention provides a flow guide plate, a mashing assembly and a cooking utensil. The flow guide plate comprises a bottom plate and a plurality of connectors, wherein a feed inlet hole is formed in the bottom plate; the first end of each connector is connected with the bottom plate, the second end of each connector can be movably connected with a body of the cooking utensil, the flow guide plate can rotate relative to the body of the cooking utensil, and the connectors are arranged around the feed inlet hole at intervals. In the technical scheme, the bottom plate can be connected with the cooking utensil through the connectors, the connectors are arranged around the feed inlet hole at intervals, it is guaranteed that large gaps exist between the adjacent connectors, and a product is easy to clean. The bottom plate is provided with the feed inlet hole so as to guide flow of liquid in the cooking utensil, the liquid flows to a mashing device, and accordingly the product smashing effect is improved.

Provided is an Fe-Pt-oxide-BN sintered body for high-density sputtering targets, which is capable of suppressing the generation of particles during sputtering. An Fe-Pt-oxide-BN sintered body for sputtering targets, which is configured such that the mass ratio of N to B, namely N/B is within the range of 1.30 plus and minus 0.1.

The invention discloses a cyclone separation type particle heat exchanger and a heat storage power generation system. The cyclone separation type particle heat exchanger comprises an outer cylinder and a plurality of water channels, the side walls of the two ends of the outer cylinder are connected with a high-temperature particle-air mixture inlet and a high-temperature particle-air mixture outlet which are tangent to the outer cylinder correspondingly, the multiple water channels and the outer cylinder are coaxially arranged and penetrate through the bottoms of the two ends of the outer cylinder, the water channels are in sealed connection with the bottom of the outer cylinder, and wear-resistant layers are arranged on the inner surfaces of the outer cylinder, the high-temperature particle air mixture inlet and the high-temperature particle air mixture outlet. Abrasion of particles to the heat exchanger can be effectively avoided and weakened, and the requirement for solar efficient particle heat storage power generation is met.