120results about How to "Corrosion" patented technology

A heat-assisted magnetic write head includes a magnetic pole having an end surface exposed at an air bearing surface, a waveguide extending toward the air bearing surface to propagate light, and a plasmon generator provided between the magnetic pole and the waveguide, and generating near-field light from the air bearing surface, based on the light propagated through the waveguide. The plasmon generator has an end portion exposed at the air bearing surface or located in close proximity to the air bearing surface, the end portion having a minimum thickness in a region close to the waveguide.

The invention discloses an association polymer fracturing fluid prepared by recovery waste water of crude oil. The fracturing fluid comprises the following components: 0.2-1.4wt% of thickening agent, 0.01-0.1wt% of thickening assistant, 0.05-0.1% of metal ion stabilizing agent, 0.02-0.05wt% of water block preventive, 0.05-0.2wt% of high-temperature stabilizing agent, 1-2wt% of clay stabilizing agent and the balance of the recovery waste water of the crude oil. Compared with the prior art, the fracturing fluid has the benefits that the fracturing fluid system adopts an association polymer as a primary thickening agent, no cross-linking agent is used, structural viscosity is formed by the synergetic effect of the association polymer and an ampholytic surfactant, and the fracturing fluid has the characteristics of temperature resistance, good salt tolerance, shear resistance, bacterial corrosion resistance and low friction, and has a good solid carrying behavior when the viscosity is greater than 20mPa*s.

A metal pipe corrosion monitoring device includes a steam introduction unit for introducing thereinto steam flowing through a metal pipe; and a corrosion testing unit provided in the steam introduction unit, characterized in that the steam introduction unit is configured to generate condensed water by condensing some of the steam to create a simulated environment similar to an actual environment in the metal pipe and discharge the condensed water above a predetermined water level to the outside. The corrosion testing unit has one or more contact members that contact with a water line region around a water surface of the condensed water in the steam introduction unit, a water phase region on a condensed water side and a vapor phase region on a steam side, and is configured to be able to measure an electric resistance of the one or more contact members.

The invention relates to the technical field of amorphous alloy application and particularly relates to an amorphous alloy scalpel and a manufacture method thereof. The scalpel is an amorphous alloy scalpel manufactured by a zirconium-based amorphous alloy, a copper-based amorphous alloy, a titanium-based amorphous alloy, a nickel-based amorphous alloy, a palladium-based amorphous alloy or an iron-based amorphous alloy. The Vickers hardness of the scalpel is 400-600, the yield strength is 1000-3000 MPa, the elastic limit is 2-3%, and the nickel release amount is 0-0.015 mg/cm2/week; the surface of the scalpel is not corroded after a salt spray test is done for 500-2000 hours. The manufacture method comprises the steps of preparing an integral outline shape of the scalpel through a die-cast formation method, and molding the knifepoint part through TPF or RDF to obtain the amorphous alloy scalpel. The amorphous alloy scalpel has the advantages of high precision, high strength, high elasticity, high hardness, scratch-resistance, corrosion-resistance, and sharp and long service life.

The invention relates to a preparation method of polyoxymethylene dimethyl ethers, mainly solving a problem that catalysts are corrosive in the prior art. According to the technical scheme adopted by the preparation method, methanol or dimethyl ether, and formaldehyde or trioxymethylene are adopted as raw materials, the molar ratio of the methanol or the dimethyl ether to the formaldehyde or the trioxymethylene is 1:(0.1-10), the raw materials are contacted with a catalyst and reacted at 50-200 DEG C under 0.1-10 MPa to produce the polyoxymethylene dimethyl ethers, and the catalyst is at least one selected from Al-MCM-41, Al-MCM-48, Al-SBA-15, Al-HMS, Al-MSU-1 or Al-MSU-2. By the scheme, the problem is solved well and the preparation method can be used in industrial production of the polyoxymethylene dimethyl ethers.

The invention discloses an industrial heat-resisting fireproofing instrument cable which is characterized in that a conductor is formed by a plurality of tinned copper wires in a twisting mode, a fireproofing layer wraps the conductor in a pressing mode, an insulating layer wraps the fireproofing layer in a pressing mode to form an insulating wire core, a pair twisting set is formed by two insulating wire cores, a polyester belt wraps the outer surface of the pair twisting set in a lapping mode, and a shielding layer knitted by tinned copper wires is arranged on the outer surface of the polyester belt to form a pair twisting unit. A cable core is formed by the multiple pair twisting units in a twisting mode. A polyester belt lapping wrapping layer, a longitudinal drainage wire, a tinned copper wire knitting total shielding layer, a copper foil lapping wrapping layer and an outer jacket layer formed in a pressing wrapping mode are sequentially arranged on the outer surface of the cable core from inside to outside, and the insulating layer and the outer jacket layer are made of fluororesin. The industrial heat-resisting fireproofing instrument cable has excellent fireproof performance and high-temperature-resisting performance, has excellent electrical performance and bending performance, is light and handy in cable structure, and meets the requirement for serving as an electric instrument connecting wire under the harsh high temperature environment.

The invention discloses an ultra-hard diamond-like antireflection film, an infrared material comprising the antireflection film as well as a preparation method and application of the antireflection film and belongs to the field of an optical material, wherein the antireflection film comprises an amorphous diamond-like film layer and a tetrahedral diamond-like film layer; and the tetrahedral diamond-like film layer is a surface layer of the antireflection film. The antireflection film disclosed by the invention has the advantages of being resistant to heavy friction and also high in infrared transmittance.

The invention provides a heat and sound insulation wood plastic material, belonging to the technical field of decorative wood plastic material. The material is composed of 80-100 parts of wood fibre, 20-35 parts of polyurethane plastic, 1-3 parts of a foaming agent, 3-5 parts of a plasticizer, 1-3 parts of fire retardant, 1-2 parts of an anti-oxidant, 1-2 parts of a flexibilizer and 0.5-1 part of a dispersant. According to the invention, the raw materials are easily available and cheap; and the prepared sheet materials has excellent performances of fire resistance, water resistance, corrosion resistance, humidity resistance, insect resistance, fungi resistance, acid and alkali resistance, no toxicity and no pollution; has higher hardness, longer life and higher strength than plastics do; and uses urethane foam, thereby not only being good in the heat insulation effect, but also having the sound insulation effect. The material can be used for decorating metope and base plate, and being made into furniture at the same time, and is beautiful and durable.

The invention discloses a nano-modified sodium acetate trihydrate phase change heat storage material and a preparation method thereof. The material is composed of, by mass, 90-99 parts of sodium acetate trihydrate, 0.5-2 parts of nano-particles, 0.5-2.5 parts of cellulose and 5-10 parts of graphite, wherein the nano-particles are at least one or a composition of neutral particles and polar particles, the nano-particles do not chemically react with water, and the average particle size of the nano-particles is smaller than 50nm. The phase change temperature is 54-58 DEG C, the degree of supercooling is less than 4 DEG C, and the latent heat of phase change is more than 200kJ/kg. The nano-particles are adopted for modification, the thermal cycle stability of the sodium acetate trihydrate phase change material is improved, and no thermal performance attenuation exists after the material is subjected to 800 times or more of heat charging and discharging cycle tests. The phase change material is green and environmentally friendly, the preparation method is simple, batch production is easy to achieve, stable access of heat is facilitated, and the heat conversion efficiency is improved.

The invention relates to a medicament for treating empyrosis and scalding and a preparation method thereof. The medicament of a formula comprises the following components in percentage by weight: 25 to 40 percent of bee glue, 2 to 5 percent of golden thread, 1 to 3 percent of phellodendron, 1 to 3 percent of pangolin scales, 1 to 2 percent of borneol, 30 to 55 percent of colza oil and 15 to 32 percent of sesame oil. The preparation method comprises the following steps of: grinding the golden thread, the phellodendron, the pangolin scales and the borneol into 80 to 100-mesh powder for later use; putting the colza oil and the sesame oil into a container, and heating to the temperature of between 180 and 240 DEG C; adding the bee glue, and after the bee glue is dissolved completely, cooling naturally to the temperature of between 60 and 80 DEG C; and adding the powdery medicaments ground in advance, heating, stirring and decocting at the heating temperature of between 60 and 80 DEG C for200 to 240 minutes, and concentrating to form paste. The medicament can produce an effect quickly in inflammation diminishing and detumescence and has an obvious effect of easing pain, and a physiological structure of skin hair follicles can be reconstructed. By the preparation method, active ingredients of each medicament can be kept effectively, so that the prepared medicament is high in curative effect.

The invention relates to a lightweight ceramic material, which is prepared from magnesium soil and pore former through the steps of proportioning, ball grinding, squeezing, forming, drying and sintering. The material has the advantages of light weight, quench resistance, high intensity, strong corrosion stability, non-deformation, good heat-insulating property, and sound insulation performance.

The invention relates to a water-based laser packaging glue used for cigarettes and a preparation method thereof. The water-based laser packaging glue consists of the following components: a VAE emulsion, nano alumina/crystal alumina, calcium chloride, polyvinyl alcohol, alcohol, a nonionic emulsifier, an environmental protection agent, a preservative, and water. Compared with the prior art, the water-based laser packaging glue has the characteristics of fast drying speed, strong cohesive force, good fluidity, no toxicity, no odor, no corrosion, no burning, and storage resistance. The productquality and various technical performance indicators are superior to similar products, especially in terms of drying speed, bond strength and fluidity, which can be increased by 60% based on the past.The water-based laser packaging glue strictly implements the requirements of the People's Republic of China tobacco industry standard-Volatile and semi-volatile components of tobacco water-based glue, formaldehyde is less than 20ppm, ethyl acetate is less than 400ppm, and the water-based laser packaging glue is inspected by the National Tobacco Quality Supervision and Inspection Center.

The no-blocking dredge pump includes a pump body, an impeller, a motor, a sealed oil chamber and a mechanical seal. The impeller is one double flow passage structure set inside the pump body; the motor includes stainless steel casing, rotor, shaft, flange type upper bearing seat on the casing and lower bearing seat inside the casing. The upper bearing seat and the lower bearing seat support the rotating rotor and shaft; the sealed oil chamber is constituted with a gland, the casing and the lower bearing seat; and the casing has lower end connected to the pump body. Compared with available technology, the present invention has the advantages of less blocking, reliable sealing, high efficiency high running smoothness and reliability.

The invention discloses a carrier roller bearing assembly and a carrier roller with the bearing assembly. The carrier roller bearing assembly comprises a bearing base, a bearing and a sealing assembly, wherein the bearing is installed on the bearing base. The sealing assembly comprises a bottom sealing ring, a shaft sleeve, a shaft sleeve sealing ring and a sealing outer cover, the bottom sealing ring is arranged on one side of the bearing in the axial direction of the carrier roller, the shaft sleeve, the shaft sleeve sealing ring and the sealing outer cover are arranged on the other side of the bearing in the axial direction of the carrier roller, and the shaft sleeve, the shaft sleeve sealing ring and the sealing outer cover are coaxially arranged. The bearing assembly has good sealing performance, and when used, the carrier roller with the bearing assembly is low in noise and good in sealing performance and has good mechanical strength.

The invention discloses mixed gas treatment equipment based on a plasma technology. The equipment comprises an SF6 degradation host machine and a power supply part; the host machine comprises a mixed gas box, a plasma discharge matrix and a tail gas collection box which are densely assembled together; purified water fills the bottom of the mixed gas box, and gas to be degraded in the mixed gas box is mixed with diluent gas and water vapor to form mixed gas; one end of the plasma discharge matrix is connected with the mixed gas box, so that the plasma discharge matrix can be used for carrying out plasma degradation treatment on the mixed gas; the tail gas collection box is connected with the other end of the plasma discharge matrix, and alkaline absorption liquid is contained in the tail gas collection box, and the tail gas collection box is used for washing the degraded gas and then discharging the gas through an exhaust pipe. The gas mixing device for mixing SF6 gas to be degraded and diluent gas and the washing and collecting device for tail gas subjected to discharge degradation are integrated in front of and behind the discharge matrix, so that the main part of the whole equipment can be formed, and the equipment is small and portable and can be used in various occasions.

The invention relates to a preparation method of polymethoxy methylal, which mainly solves the problem of corrosiveness of the catalyst in the prior art. The method comprises the following step: contacting raw materials methanol or dimethyl ether and formaldehyde or trioxymethylene in a mol ratio of 1:(0.1-10) with a catalyst to react at the reaction temperature of 50-200 DEG C under the reaction pressure of 0.1-10MPa to obtain the polymethoxy methylal, wherein the catalyst is a ZSM-5 molecular sieve of which the crystal grain diameter is smaller than or equal to 5 micrometers, the ZSM-5 molecular sieve is treated in a 0.01-2 mol/L alkali solution at 30-100 DEG C for 0.1-10 hours, and the weight ratio of the alkali solution to the molecular sieve is 1-20. The technique scheme provided by the invention well solves the problem, and can be used for industrial production of polymethoxy methylal.

The invention relates to the technical field of etching methods and particularly discloses a super-pure aluminum microscopic tissue form etching agent and an etching method thereof. The etching agentis a mixture of hydrofluoric acid, nitric acid and purified water, wherein the volume ratio of hydrofluoric acid to nitric acid to purified water is (5-10) to 10 to (80-85). A reagent adopted in the preparation method is simple and capable of corroding novel high-conductivity hard aluminum leads, and a grain boundary is selectively etched according to the difference between the grain boundary andthe internal electrode potential in a grain in the premise that second-phase particles and other compounds in the tissue are not etched, so that a clear microscopic tissue can be displayed, and the compounds generated in the material and the separated second-phase particles can be preserved, and the reagent can be applied to the etching of a microscopic tissue of a hard aluminum lead used in existing projects.