68results about How to "Good blocking performance" patented technology

An insulation blanket is disclosed that contains fire-blocking materials for preventing rapid penetration of fire into an aircraft fuselage in case of a fire outside the aircraft. The insulation blanket contains at least one layer of fiberglass or other thermal-acoustic insulation material without fire-blocking properties, and one or more layers of fire-blocking material. The fire blocking material is wider than the thermal-acoustic insulation so that it may be folded against and attached to adjacent structural frame members of the fuselage. In the alternative, a thermal-acoustic insulation material is used that has fire-blocking properties instead of the separate layers of fire-blocking and thermal-acoustic insulation materials. A method for installing insulation blankets according to the present invention is disclosed, whereby a fire-blocking insulation portion of the blanket is folded against and attached to frame members of the aircraft using attachment posts or spring clips.

A device for the reduction of aerodynamic drag and for improved performance and stability of ground vehicles by reducing the mass and velocity of the flow passing under a vehicle is described. The device is particularly suited for a tractor-trailer truck system that includes a motorized lead vehicle pulling one or more non-motorized vehicles. The device is designed to control the flow from entering the undercarriage region from the side of a trailer of a tractor-trailer truck system.

The present invention includes a blend composition comprising at least one coupled propylene polymer and at least 55 weight percent of at least one ethylene polymer, based on the total weight of the coupled propylene polymer and the ethylene polymer. The invention also includes methods for making the coupled propylene polymer and methods for making the blend composition. The present invention further includes films made from the blend composition.

A method and device for the reduction of aerodynamic drag and for improved performance and stability of ground vehicles by reducing the mass and velocity of the flow passing under a vehicle is described. The device is particularly suited for a single unit truck system but may also be applied to a tractor-trailer truck system or any combination vehicle that includes a motorized lead vehicle pulling one or more non-motorized vehicles. The device is designed to control the flow from entering the undercarriage region from the front and side of the subject ground vehicle system.

The invention relates to a foam sealing channeling composition, a preparation method thereof and applications thereof, mainly solving a gas channeling problem in gas-drive oil recovery processes at present. According to the technical scheme, the foam sealing channeling composition, the preparation method thereof and the applications thereof are adopted, wherein the foam sealing channeling composition comprises a cationic foaming agent, an anion-nonionic foaming agent and gas; the cationic foaming agent, the anion-nonionic foaming agent and the gas are mixed to form foams; the cationic foaming agent is any one of a quaternary ammonium salt and a quaternary amine alkali; the anion-nonionic foaming agent is any one of fatty alcohol polyoxyethylene/polypropylene ether carboxylate or fatty alcohol polyoxyethylene ether/polypropylene ether sulfonate; the gas is any one that has an inert relationship with the foaming agents; the molar ratio of the cationic foaming agent to the anion-nonionic foaming agent is 1:0.01-100; and the volume ratio of the gas to the liquid is 0.1-10:1. By the technical scheme, the problem is solved well and the foam sealing channeling composition can be used in enhanced oil recovery processes of an oil field.

A method and device for reducing aerodynamic drag and improving performance and stability of ground vehicles by reducing the mass and velocity of the flow passing under a vehicle is described. The device is suitable for use with a truck and trailer system but may also be applied to a single unit truck system or any combination vehicle that includes a motorized lead vehicle pulling one or more non-motorized vehicles. The device includes right forward and aft panels configured to attach to a lower right portion of the vehicle such that they extend downward from the undercarriage region. The device further includes left forward and aft panels configured to attach to a lower left portion of the vehicle such that they extend downward from the undercarriage region. The device minimizes and controls airflow entering the undercarriage region from the front and sides of the ground vehicle.

The invention discloses a thickened oil well polymer plugging remover. The plugging remover is prepared from the following materials in percentage by mass: 0.5 to 5.0 percent of gel breaker, 1.0 to 10.0 percent of cleaning agent, 0.1 to 5.0 percent of clay stabilizer, 0.1 to 5.0 percent of iron ion stabilizer, 0.1 to 5.0 percent of surfactant, 0.1 to 5.0 percent of corrosion inhibitor, 0.1 to 5.0 percent of bactericide and the balance of water, wherein the gel breaker is prepared from 30 to 70 percent of gel breaker I and 30 to 70 percent of gel breaker II, the gel breaker I is one or more of ammonium persulfate, sodium thiosulfate, potassium periodate and potassium monopersulfate, and the gel breaker II is one or more of calcium peroxide, potassium peroxodisulfate, sodium periodate and iron sulfide. The thickened oil well polymer plugging remover is suitable for solving the plugging problem caused by a thickened oil well polymer, has a better plugging removal effect than a conventional single oxidizer or single acid liquor, and has the advantages of good plugging removal effect, strong corrosion resistance, long period of validity, safety and the like.

The invention discloses a thickened oil thermal recovery channeling sealing agent, a channeling sealing agent thick liquid, a preparation method of the thick liquid and a thickened oil thermal recovery profile control channeling sealing method, and belongs to the technical field of oilfield chemistry and oil exploitation engineering. The oil exploitation comprises components in percentage by weight as follows: 45%-65% of a sulphoaluminate gelling agent, 16%-40% of perlite floating beads, 0.5-0.7% of a suspending agent, 14%-18% of a stabilizer and 0.3%-0.5% of a retarder. Water is added to the channeling sealing agent to form the thick liquid, and the water-ash ratio is controlled to be 3-4.5 in the preparation process. The density of the channeling sealing agent thick liquid is low and ranges from 1.05 g/cm<3> to 1.1 g/cm<3>, the thick liquid can permeate to a steam channeling passageway in the deep position of the ground stratum and is cured for 4-12 hours at the temperature ranging from 30 DEG C to 100 DEG C, a cured product can resist high-temperature steam at the temperature of 300 DEG C, the blocking effect is good, the steam channeling problem of the middle lower part of an oil reservoir can be solved, and a better blocking effect is realized on channeling sealing of the overlapping layer of steam of a thick oil layer.

In a matting agent coating device, a matting agent within a supplying section is supplied to a metering section. A supplied amount of matting agent at a surface of a metering roller is metered by a metering blade, and an excess amount is filtered at a slit portion. Matting agent is supplied to an application roller that is provided directly beneath. For example, a closed-cell sponge rubber is used as a material of the metering roller, and a size of closed cells is around 5 to 100 times an average particle diameter of the matting agent. The matting agent that has been supplied to a surface of the application roller is transferred and applied onto a recording medium. The matting agent is transferred from the application roller onto image portions of the recording medium due to tackiness of an ink film forming an image.

A fuel assembly lower tie-plate with better performance in capturing linearly elongated foreign substances. The lower tie-plate has a screening plate positioned below the network section in the lower tie-plate cavity. The screening plate is arranged substantially horizontally so that the lower tie-plate cavity is divided into upper and lower parts by the screening plate. Tubular filters are attached to the screening plate so that the tubular filters have openings below and above the screening plate. Top ends of the tubular filters are closed, and the openings above the screening plate are formed in side walls of the tubular filters. The lower tie-plate may be assembled by combining the screening plate, the network section and the nozzle section together, after the tubular filters have been attached to the screening plate.

The invention relates to a uranium well gas lifting stemming removing method used in a sandstone type uranium deposit regent-free uranium mining production process. The method comprises the steps: a polyethylene pipe is put in a uranium well, and a reverse circulation gas lifting mode is adopted to achieve the purpose of plug removing, wherein, the reverse circulation gas lifting mode is that high-pressure gas is injected in the annular space between a PVC casing and the polyethylene pipe so that the liquid surface in the annular space is lowered gradually, inside and outside differential pressure is formed outside the polyethylene pipe, the liquid in the polyethylene pipe is lifted out of the well mouth under pressure, then negative pressure is formed at the ore bed segment at the well bottom simultaneously so as to cause the fluid in a uranium ore bed to flow faster towards a well casing, and after that, stemming of gas, mechanical impurities and the like in the ore bed flow out to ground along with the high speed fluid by the polyethylene pipe. The method can be applied to the stemming removing operation of uranium deposit ore bed caused by gas and mechanical impurities; and by utilizing the technological method, good stemming removing effect is obtained, the production period of the uranium well is improved greatly and the uranium mining production cost is reduced.

The invention provides a method for releasing plugging of a gas field wellbore. A gas field plugging releasing agent is composed of an acid plugging releasing agent and an alkaline chelating agent andis suitable for gas wells and oil wells, the acid plugging releasing agent uses an acid-salt reaction to mainly dissolve CaCO3, FeCO3, FeS and other products in the wellbore, the alkaline chelating agent uses the chelating mechanism to mainly dissolve BaSO4, CaSO4 and other acid insoluble substances in the wellbore, after plugging objects in the wellbore are subjected to plugging releasing by using the method for releasing plugging of the gas field wellbore, the gas production and the oil production are increased rapidly, the oil casing pressure difference is decreased obviously, and the plugging releasing effect is remarkable.

Heterostructure field-effect transistor (HFET) having a channel layer, a barrier layer disposed on the channel layer, and a gate, source and drain electrodes disposed on the barrier layer, respectively, and corresponding fabrication methods are disclosed. The drain electrode includes a p-type semiconductor patterned structure and a raised drain section, the drain electrode includes a Schottky contact and an ohmic contact, the Schottky contact is formed between a top surface together with a side surface of p-type semiconductor patterned structure and a bottom surface together with a side surface of raised drain section, the ohmic contact is formed between another surface of raised drain section and barrier layer, the raised drain section partially surrounding the p-type semiconductor patterned structure, and a bandgap of the channel layer is less than a bandgap of the barrier layer.

The invention discloses anti-ultraviolet protection type easy-care finishing liquid for shirts and a finishing method of the shirts. The anti-ultraviolet protection type easy-care finishing liquid is prepared from butanetetracarboxylic acid, ammonium citrate, triethanolamine, malic acid, sodium hypophosphite, propylene glycol, quaternized modified amino silicone oil, boric acid, amino-modified etherifed polysiloxane, fatty alcohol-polyoxyethylene ether, diphenylethylene disulfonate derivatives, chitosan, N, N-dimethyl formamide, tetrabutyl titanate, diluted hydrochloric acid, an emulgator REO15, an appropriate quantity of titanate coupling agent, an appropriate amount of maleic anhydride, an appropriate amount of absolute ethyl alcohol and an appropriate amount of deionized water. The anti-ultraviolet protection type easy-care finishing liquid for the shirts and the finishing method of the shirts have the advantages that the finishing liquid is safe, healthy, non-irritating and environment friendly, and is excellent in ultraviolet ray shielding performance and protection effect, high in combining capacity, lasting in protection performance and capable of making the shirts highly resistant to crease and wash, easy to care and full, soft and smooth to touch.

The invention provides a solution to high resistance electromagnetic surface and the preparing method. The high resistance electromagnetic surface can prohibit the transmission of electromagnetic wave in some frequency range in the direction of substrate surface, and the ceramic plate device tape-casting printing process can make us flexibly select ceramic material composing mother body to improve and regulate capacitance/inductance property. Based on the existing ripe plate induction device production process, its process flow is as follows: firstly preparing ceramic substrate raw band with a certain thickness by the tape-casting process, printing a layer of flat silver pulp as a bottom electrode on the ceramic substrate raw band by silk-screen; successively preparing a spirally connected silver coil matrix on the bottom electrode by silk-screen and special through hole process, where the bottom ends of these induction coils are connected; making a series of thermal treatment processes on the printed substrate, completing glue arranging and ceramic sintering courses, and obtaining the excellently sintered electromagnetic wave band gap material with a certain mechanical strength and predesigned electrochemical property.

The invention discloses a choking device of atrium and ventricular septal defects and patent foramen ovale, which is safe and convenient for operation release, comprising a front tray 1 and a rear tray 2 which are approximate mushroom-shaped and composed of a plurality of metal wires, the front tray 1 and the rear tray 2 can hold the opening of atrium and ventricular septal defects and patent foramen ovale, especially, the metal wire extended by the front tray 1 and the metal wire extended by the rear tray 2 are all fixed by a rear chucking appliance on the outer surface of the rear tray 2, the rear chucking appliance 3 has screw threads connected with a conveyor, the structure of the invention is reasonable, especially a lumbar part formed by being braided with the front tray and the rear tray together recorded in the existing technology is not provided between the front tray and the rear tray, and the front tray and the rear tray are all composed of separate a set of metal wires, so the interactive pull force of the existing technology is not provided between the front tray and the rear tray. Accordingly, after the front tray is released from the tube of the conveyor, the maximum size state can be reached rapidly.

The invention relates to a transparent conductive optical sheet having high invisibility of a pattern. The transparent conductive optical sheet comprises an ITO layer via etching of a pattern. Via a thin film drying effects of a reflectivity matching layer of the optical sheet, difference between the reflectivity and reflecting color between a non-etching part and an etching part of the ITO layer is corrected, and a user is allowed to fail to recognize the non-etching part and the etching part visually, so definition for display of a display panel on a lower part will not be reduced. In particular, when thickness of the ITO layer is changed for adjustment of surface resistance, even if the reflectivity and thickness of a transparent base layer or the reflectivity matching layer are changed, the thin film drying effects can be well maintained. Thus, the optical sheet can be suitable for touch display panel field of display panels of all kinds of electrical devices.