521results about How to "Avoid corrosion" patented technology

A coupler system for use in assembling artificial tree trunks or poles. In particular, the coupler system includes a first part having a cone-shaped end and carrying a wedge-shaped groove parallel to its axis, which is insertable into a second part that is formed as a pair of concentric cylinders. The inner of these cylinders receives the first part of the coupler system and includes a bulge parallel to its axis that aligns with the wedge-shaped groove of the first part when the two are fitted together. Preferably, the end of the first part opposite the cone-shaped end is dimensioned to fit into a first tubular segment that stands as a surrogate for a tree trunk. Additionally, the outer of the concentric cylinders is dimensioned to receive a second tubular segment.

The invention discloses a conductive plastic drain board which comprises a base plate, a metal wire and a filter membrane, wherein two sides of the base plate are provided with drain grooves; the base plate is made of conductive plastic; the metal wire penetrates through and is inserted into the base plate and is parallel to the drain grooves; and the base plate is wrapped by the filter membrane. The conductive plastic drain board can be used as an electrode for an electroosmosis method; and compared with a metal electrode traditionally adopted for the electroosmosis method, the conductive plastic drain board used as an electroosmosis electrode has the advantages that while the consolidation speed is ensured, the corrosion of the electrode during the electroosmosis process is avoided, the practicability of the electroosmosis method is enhanced, and possibility of popularizing the electroosmosis method is provided.

The invention provides an all-organic type engine coolant which comprises glycol, fat carboxylic acid, tricarboxylic acid, benzoic acid, tri (2-ethylhexoic acid) phosphonate, imidazoles compound, defoamer and deionized water. The engine coolant of the invention contains no inorganic salts, such as amines, borate, nitrate, nitrite, silicate, and the like, so the engine coolant is environment-friendly, can prevent all the contacted metal and nonmetal materials in the engine cooling system from being corroded, has an obvious engine coolant effect on various metals, particularly solves the problem that the cast aluminum using a traditional organic acid engine coolant becomes black generally, can be stabled in a relative low density and bigger PH value range, and has the advantages of long-time storage and use.

Quaternary ammonium carbonates, bicarbonates, and mixtures thereof as anti-corrosive agents. The present disclosure relates to a method for inhibiting the corrosion of metal surfaces by applying a composition containing one or more quaternary ammonium carbonate or bicarbonate. The disclosure is also directed to anti-corrosive coatings for metal substrates containing these compounds, to metal substrates having these anticorrosive coatings, and to aqueous cleaning solutions containing these compounds.

The invention provides a method for preparing a nitrogen-doped carbon nanotube fuel cell catalyst, aiming at the problems existing in the preparation methods of the existing nitrogen-doped carbon nanotubes. In the method, a double-temperature area method is adopted to prepare a nitrogen-doped carbon nanotube, firstly a solid carbon source and nitrogen source precursor is put in a low-temperature area to be heated to be sublimated and then the sublimated precursor is brought into a high-temperature area by carrier gas to deposit the carbon nanotube; corrosion of gas inlet pipelines and equipment interfaces can be effectively avoided by putting the precursor in the low-temperature area; and meanwhile the flow velocity of the carrier gas is lower, so the precursor can fully react in the high-temperature area, thus improving the yield of the nitrogen-doped carbon nanotube. The method is simple and practicable, is safe to operate and has low production cost. The nitrogen-doped carbon nanotube catalyst prepared by the method can be applied in the field of fuel cells. The catalyst prepared by the method has efficient oxygen reduction catalytic property and potential in comparing favourably with and replacing the Pt/C catalyst.

A fuel cell system includes a fuel cell main body which has a solid polymer electrolytic membrane, a fuel electrode and an oxidant electrode attached to the solid electrolyte membrane; a fuel storage unit which stores liquid fuel; a polymer membrane having a proton conductivity and provided in the fuel storage unit; a concentration detection unit (a first electrode terminal and a second electrode terminal) which detects the alcohol concentration of the liquid fuel in the fuel storage unit based on the alteration of the proton conductivity of said polymer membrane; and a concentration measurement unit.

This invention provides a fluorophosphate optical glass molding equipment, including mold. Mold described composed by the end of mold, side die and block, in Mold also provided with cooling flat, air vents are installed on the flat. Fluorophosphate optical glass molding apparatus molding methods includes the following steps: 1) glass fluid flows out of the material tube and flow into Mold; 2) in Mold the glass fluid flow through the upper surface cover the cooling flat, inert gas through the air vents on the cooling flat blow to glass solution surface, so as soon as cool glass liquid for molding. The invention set cooling flat on the mold, through air vents blowing inert gas, so as soon as cooling liquid glass, to avoid the glass at high temperatures causing the volatile stripes, ensuring the quality of products; In addition, the invention uses graphite mold to avoid corrosion.

The invention provides a rustproof lubricating agent. Based on the total weight of the rustproof lubricating agent, the rustproof lubricating agent comprises the following components: (a) 5%-45% of base oil, wherein the base oil is one or more selected from polyaleneglycol, fatty acid glyceride and propanetriol; (b) 0.1%-15% of corrosion inhibitor, wherein the corrosion inhibitor can be one or more selected from organic polycarboxylic acid, organic polycarboxylate and alkylamine; (c) 0.05%-10% of preservative, wherein the preservative can be one or more selected from benzoic acid type preservative and isothiazolizone type preservative; and (d) 30%-90% of water.

Wood framed walls of buildings are strengthened against destructive wind and seismic forces by a threaded hold-down rod attached to the structure top plate and anchored to the building foundation. The foundation structure may be concrete or other floor joist or the like. The threaded rod is normally used in a system that attaches at top and bottom of studs at approximately every fourth or fifth stud along all load-bearing walls. The threaded rod system comprises two sections of threaded rod connected to the structure by way of a nut and washer at the top plate and embedded in the foundation at the bottom. A short section of threaded rod is embedded in the foundation and a coupling nut connects the short section to the remaining threaded rod section near the bottom plate. The short section may be manufactured of galvanized steel or stainless steel to avoid corrosion where fastened to a pressure treated bottom plate. In an alternate embodiment, an elongated wire bolt rod can be attached to the foundation and directly to a roof truss and ceiling plate. The described system can be installed during initial construction of a structure or retrofit into existing structures.

The invention relates to a substrate having a metal post and a method of manufacturing the same, in which a round solder bump part formed on a metal post melts and flows down along a lateral surface of the metal post by being subjected twice to a reflow process, thus forming a solder bump film for preventing oxidation and corrosion of the metal post.

The invention discloses an aluminum plastic film package material for a lithium battery. The aluminum plastic film package material for the lithium battery has the water proofing performance, the high temperature resistance and the corrosion resistance and is in a lamination structure comprising a base material layer, a bonding layer, an aluminum foil layer, a corrosion resistant layer, a joint layer and an inner layer from the outermost layer to the innermost layer; one side surface or two side surfaces of the aluminum foil layer can be coated with conductive coating and the coating is solidified so as to form the corrosion resistant layer; the joint layer between the corrosion resistant layer and the inner layer can be formed by using fluorinated polyurethane resin joint adhesive. When the aluminum plastic film package material is applied to the aluminum plastic film package of the lithium battery, the excellent water proofing performance, high temperature resistance and corrosion resistance of the lithium battery can be promoted, and the service life of the lithium battery can be prolonged.

An apparatus for charging dry air or nitrogen gas into a container for storing semiconductor wafers can remove chemical gas and moisture from the container, and then prevent acid from being generated at the surfaces of the wafers.

The apparatus A for charging dry air or nitrogen gas into a container 1 for storing semiconductor wafers 9 is connected to an opening 8a, acting as an intake, and to an opening 8b, acting as an exhaust, wherein the container 1 comprises a plurality of openings 8 disposed at the bottom plate of the container 1, the apparatus comprising:

PTFE filters 7 disposed at the plurality of openings 8a, 8b,

a portion 11 for providing the dry air or nitrogen gas to the container 1, and

a portion 12 for exhausting the used dry air or nitrogen gas from the container 1 after removing chemical gas and moisture from the container, and then preventing acid from being generated at the surfaces of the wafers 9.

The invention discloses a recycling system and a recycling process for recycling salt from desulfurization waste water. The system comprises a purifying device, a heat pre-exchange device, a first-stage evaporative crystallizing device, a first-stage material transferring pump, a second-stage evaporative crystallizing device, a first-stage centrifuge, a drying bed, a second-stage centrifuge and a salt dissolving bucket. According to the system and the method disclosed by the invention, purified desulfurization waste water is subjected to two-stage evaporation; by controlling the evaporation amount and the evaporation temperature of a first-stage evaporator, the waste water is concentrated and crystallized to generate NaCl, and Na2SO3 is not crystallized, so that the content of NaCl is enabled to be above 99%. Afterwards, a material of the first-stage evaporator is transferred to a second-stage evaporator to be evaporated and concentrated again to generate NaCl crystal and Na2SO4 crystal. The system and the method disclosed by the invention can be used for continuously producing high-purity NaCl of which the purity is larger than 99%.

The invention relates to a process for atomizing desulfurization waste water through recycled flue gas of a tower type boiler. The process comprises the steps that the desulfurization waste water of a desulfurization tower is drained to a stilling basin for preliminary sedimentation, and then the desulfurization waste water is pressurized through a pump and conveyed to a pipeline of a nozzle; part of the desulfurized flue gas is sent to the pipeline of the nozzle through a recirculation fan, so that the recirculation flue gas is in contact with the desulfurization waste water in the pipeline of the nozzle, and the initial temperature of the desulfurization waste water is raised; the nozzle is installed in a vertical flue located at the tail of the boiler, the desulfurization waste water is jetted and atomized, atomization liquid drops into the flue and evaporates quickly, and all ions in the desulfurization waste water are separated by crystallization quickly, captured by a dust remover when entering the dust remover along with the flue gas and discharged outward along with dust. By means of the design of the process, atomization performance of the desulfurization waste water is improved, evaporation of the desulfurization waste water is accelerated, blocking of a jet system can be prevented, the desulfurization waste water is effectively prevented from being jet to the pipe wall, the problem of corrosion of the wall surface of a flue which is caused easily when ordinary flues are used for treating desulfurization waste water is avoided, innocent treatment of the desulfurization waste water in the real sense is achieved, reconstruction investment is small, and operation cost is low.

The invention relates to a manufacture method of a bendable low-emission coated laminated glass with regionally removed coat. The method comprises the following steps: (1), pretreating a raw glass sheet by cutting and laminating to obtain a piece of glass; (2), coating a water soluble coating onto the glass surface do not needing film coating through screen printing process; (3), drying a water soluble coating on the glass with an ultraviolet lamp; (4), coating a low-emission film onto the glass surface by utilizing a piece of magnetron sputtering equipment; (5), washing away the water soluble coating with deionized water; (6), drying, dusting, matching, bending, laminating, pressing and packing the glass to obtain a product. Compared with the prior art, the obtained glass substrate has even film to grantee both the passing of electromagnetic wave signals and low emissivity, suitable for manufacturing windshield glass of an automobile.

The invention discloses a novel purifying workbench which comprises a workbench body, wherein a purifying device, a workbench surface and a support body are sequentially arranged on the workbench body from top to bottom; the purifying device and the workbench surface form a quasi-closed operation space; the purifying device comprises a primary filter, a fan and a high-efficiency filter; the primary filter is arranged at the top of the workbench body; the fan is fixed at the lower part of the primary filter; the high-efficiency filter is relatively arranged at the lower part of the fan; and the lower part of the high-efficiency filter is opposite to the workbench surface. The purifying workbench disclosed by the invention can effectively prevent permeation of external airflow and irritation to human bodies caused by peculiar smell in operation; an air quantity-adjustable fan system is adopted, and a light-touch switch is used for adjusting the voltage, thus the wind speed in a working area is always in an ideal state for sure; the mobility of the workbench is strong due to a universal castor and an adjustable foot arranged at the bottom of the workbench; and the whole workbench realizes high air cleanliness, low working noise and high humanization degree.

The invention relates to a screw connection structure and a damper structure. In the invention, elastic materials and pressure plates are arranged on the outside of the overlap section of plates for building structure, a pulling force is inducted into screws which run through the elastic materials, at least one nonferrous metal plate or composite ceramic plate is inserted into the plates for building structure, and at least the peripheral surface of the surface of the nonferrous metal plate or the composite ceramic plate caught between the steels is carried on waterproof processing. The invention also applies the screw connection structure in the damper structure. The invention can keep a friction coefficient stable by increasing the friction coefficient to save screws, and lower cost and simple structure are realized.

The invention discloses a stable cleaning fluid used after chemical-mechanical polishing, and a preparation method and application thereof. The cleaning fluid comprises strong base, alcohol amine, anantioxidant enzyme, a corrosion inhibitor, a chelating agent, a surfactant and water. The cleaning fluid can be used for chemically and mechanically polished semiconductor devices, can realize the effects that corrosion to a copper-based chip is prevented, the roughness is reduced, the stability is high, and the cleaning effect is remarkably improved, and has a good industrial application value.

Corrosion-inhibited hypochlorite compositions and methods of use are disclosed. Corrosion inhibitors including sugar acids and calcium compounds, polyacrylate and calcium compounds, and/or zinc and calcium compounds are used with hypochlorite sources to enhance the longevity and performance of electrochemical cells as well as reducing corrosion of metal in contact with the generated hypochlorite sources. The methods for generation employ a variety of electrochemical cells, beneficially including use of portable electrochemical cell system for production of corrosion-inhibited hypochlorite cleaning solutions.

The invention relates to liquid metal microparticles with core-shell structures and a preparation method and application thereof. Each liquid metal microparticle comprises a core formed by liquid metal and a shell completely wrapping the outer layer of the core, wherein the shell is prepared from an organic high-molecular polymer. The preparation method comprises the steps that the organic high-molecular polymers are dissolved in an organic solvent to form a polymer solution; liquid metal is dropwise added into the polymer solution to disperse the polymer solution into micro-nano particles; and the micro-nano particles are extruded into water through a micropore structure, and thus the liquid metal microparticles with the core-shell structures are obtained after standing. The preparation method of the liquid metal microparticles is convenient and rapid, the sizes of the prepared microparticles can reach the nanometer grade and are uniform and stable, and the problem that the liquid metal microparticles can coagulate again is completely solved. The liquid metal microparticles with the core-shell structures can be quickly prepared in a large scale, and the liquid metal microparticleswith the core-shell structures can be applied to the fields of phase-change microcapsules, nanometer fluids, drug-carrying robots and the like and have excellent application prospects at the industrialization aspect.

An internal cavity structure of the push bar kiln used for preparing VN alloy is composed of internal cavity, cover plate, side wall and tracks. A push bar kiln is longitudinally and sequentially composed of the low-temp segment with 5 temp regions, the transition segment with 4 temp regions, the high-temp segment with 7 temp regions, and the cooling segment consisting of natural cooling region and forced cooling region. It features that different but proper refractories are chosen for different temp regions. Its internal cavity has 3 separated channels. The central channel is the kiln cavity and two side channels are isolated heating element ones.

The invention provides a heat accumulating type heat exchanger for pipeless waste heat utilization in a cement manufacturing process. The heat exchanger comprises a heat accumulating material, a high-temperature flue gas inlet, a high-temperature flue gas outlet, a low temperature working medium inlet, a low temperature working medium outlet and a casing, wherein the heat accumulating material is arranged in the casing; the heat accumulating material is a solid heat accumulating material; a plurality of communicated first holes and a plurality of second holes of heat accumulating material are formed in the heat accumulating material; the first holes and the second hole are intercrossed but not communicated. According to the heat accumulating type heat exchanger, residual heat in the cement manufacture is fully utilized, the heat exchange efficiency is maximized, the energy is saved and the goals of environmental protection and energy conservation are achieved.

The invention discloses a production technology of sulphuric acid. The production technology of sulphuric acid comprises the following technological steps: (1) smashing and screening, namely selecting iron pyrite from ore and smashing, sieving and selecting appropriate iron pyrite granules with the granularity of 4-5mm; (2) roasting; (3) purifying; (4) recycling reaction heat, wherein a steam evaporation pipe bundle is arranged in a waste heat boiler, reaction heat obtained during furnace gas cooling is conveyed to a water circulation system or other thermodynamic systems through the steam evaporation pipe bundle; (5) drying; (6) carrying out conversion, wherein gas enters a conversion system through a sulphur dioxide blower, and sulphur dioxide in raw furnace gas is oxidized into sulphur trioxide gas in the presence of a vanadium catalyst; and (7) absorbing. The production technology of sulphuric acid is reasonable and simple in technology, a technological process is greatly shortened, raw materials are fully utilized, less pollutant is discharged, most importantly recovery rate of low temperature waste heat in the sulphuric acid making industry is increased, and waste of energy resources and the like is avoided, so that the production technology of sulphuric acid is applicable to popularization in the sulphuric acid production industry.

A method for coating a metal having a metal surface layer having an oxide layer thereon with a corrosion-inhibiting polymer resin layer. The method comprises contacting the surface of the metal with a pretreatment composition comprising an organophosphorus compound comprising phosphorus and an alkyl group capable of interacting with a plastic monomer resin or plastic polymer resin; and contacting the pretreated metal surface with a sealant composition comprising the plastic monomeric and/or polymeric resin.

The invention belongs to the technical field of isostatic pressure, and particularly relates to a method for measuring the isostatic pressure resistance of hollow glass beads. The method comprises the following steps: effectively detecting the isostatic pressure resistance of the hollow glass beads directly by an air pressure method, selecting hollow glass bead samples of the same batch, and drying the samples for later use; measuring the apparent particle density rho1 of initial samples; measuring the apparent particle density rhog of hollow glass bead spherical shells; measuring the apparent particle density rhop of samples to which isostatic pressure with intensity P is applied; calculating the breakage rate NP of the hollow glass beads under certain isostatic pressure intensity P according to the formula, wherein results are expressed in percentage (%). The method can be used for obtaining accurate results, is simple and convenient, and is easy to operate. A judgment basis is laid for judging the isostatic pressure resistance of the hollow glass beads in the hollow glass bead industry.

The invention provides a surface treatment method for aluminum alloys. The surface treatment method for the aluminum alloys comprises the following steps: carrying out surface oxidization on aluminum alloy workpieces by using sulfuric acid to form porous type aluminum oxide films on the surfaces of the oxidized aluminum alloys; dyeing the aluminum oxide films for at least two times in a manner of curing and protecting with combination of photo-sensitive and ultraviolet light, so that the aluminum oxide films has at least two colors; and sealing the dyed aluminum oxide films. According to the surface treatment method for the aluminum alloys, the aluminum oxide films are dyed for at least two times by the manner of curing and protecting with combination of photo-sensitive and ultraviolet light, so that the aluminum oxide films has at least two colors; the method has no requirement on the colors dyed for at least two times; the photo-sensitive dyeing is two-color or even multi-color; the pattern effect has the irreplaceable specificity; the appearance effect of the surfaces of the aluminum alloys is further effectively improved; compared with the prior art, the method can be used for effectively avoiding the defect of the corrosion of the sulfuric acid solution subjected to secondary anodic oxidation to film layers subjected to primary oxidization; the method is relatively high in reliability and stability in implementation.

An aqueous cleaning composition and method for post-CMP cleaning of a semiconductor device which contains a copper interconnect wherein the cleaning composition contains (A) N,N,N′-trimethyl-N′-(2-hydroxyethyl)ethylenediamine; and (B) at least one corrosion inhibitor selected from the group consisting essentially of uric acid, xanthine, theophyline, paraxanthine, theobromine, caffeine, guanine, hypoxanthine, adenine, and combinations thereof.

The invention discloses a method for preparing a thermal control coating with high sunlight absorptivity and high emittance on the surface of magnesium alloy, which relates to a method for preparing a thermal control coating, and solves the problem that the aluminum alloy material applied on the prior spacecraft can not meet the requirement on structure lightweighting of the spacecraft due to the heavy weight. The method comprises the following steps: firstly, pre-treating the surface of magnesium alloy; secondly, compounding main film forming agent, auxiliary film forming agent, color additive, complexing agent and pH conditioning agent into electrolyte; thirdly, adopting a micro-arc oxidation pulse power supply to provide power, and obtaining the thermal control coating with high sunlight absorptivity and high emittance on the surface of the magnesium alloy after reaction in a constant current mode. The sunlight absorptivity of the coating is 0.80-0.95, the infrared emittance is 0.80-0.90, and the weight is reduced by 28-33 percent than the weight of aluminum alloy. Therefore, the coating can be applied to spacecrafts.

The invention discloses a photoresist stripping fluid composition comprising an alcamine compound (A), a glycols and/or alcohol ether compound (B) and a sulfone and/or sulfoxide organic solvent (C). Through use of the above photoresist stripping fluid composition, photoresists formed on a metal line can be completely removed while the metal line can be prevented from being corroded. The invention also discloses a photoresist stripping method.

The invention provides an auto-docking charging system comprising a fixed power supply output device and a mobile docking device which is fixed on walking equipment. The fixed power supply output device comprises a moving unit, and a first electrode column and a first electrode cone which are arranged in the moving unit. The mobile docking device comprises a scalable mechanism, and a second electrode column and a second electrode cone which are arranged on the scalable mechanism. The scalable mechanism is used for enabling the second electrode column and the second electrode cone to slide on the internal profile surface of the moving unit when the scalable mechanism extends so as to drive the moving unit to translate or rotate, and the first electrode column and the first electrode cone are enabled to be connected with the second electrode column and the second electrode cone in a docking way to establish electric connection for charging the walking equipment. The mobile docking device is scalable and maintains in the contracted state in the non-charging period so that the electrodes can be prevented from being corroded by rainwater, and the structure is simple and the reliability is high.