475results about How to "Corrosive" patented technology

This invention supply a epoxide resin combination and its preparation method, and its application as filling material of railway plate type orbit convex shape block platform. It takes ethoxyline resin, pigment, padding, curing agent and other accessory ingredient as main ingredient. This ethoxyline resin combination possess good construction usability, good cement bond property, appropriate elasticity and syntheses mechanical property, and has performance of ultraviolet radiation proof, moisture-proof.

The invention relates to the technical field of gas detection, in particular to an infrared gas detection system suitable for oil-containing gas analysis of a reservoir, which is characterized by comprising a vacuum pump, wherein the vacuum pump is used for dedusting and drying gas desorbed in a drilling process and conveying the desorbed gas into a constant-current stabilizer through a gas pipeline; after the flow of the gas is stabilized by the constant-current stabilizer, the gas enters from an inlet of a detection chamber and is continuously exhausted from an outlet of the detection chamber; the detection chamber comprises a temperature control mechanism used for thermostatically heating and controlling a heating element in the detection chamber so that the detection chamber forms a constant-temperature gas chamber; three infrared light sources, namely a light hydrocarbon gas infrared light source, a heavy hydrocarbon gas infrared light source and a CO2 infrared light source, which have the absorption peak wavelengths of three gases comprising light hydrocarbon gas, heavy hydrocarbon gas and CO2 gas, are arranged on a gas route vertical to the constant-temperature gas chamber; after passing through the gas vertical to the constant-temperature gas chamber, the three infrared light sources are received by three photoelectric receiving tubes in three photoelectric receiving circuits; and after the three infrared light sources are amplified by an amplification processing circuit, absorption light-wave intensities of the three gases, namely the light hydrocarbon gas, the heavy hydrocarbon gas and the CO2 gas, are displayed on a displayer along a time axis. The system has the characteristics of high reliability, convenient operation and low cost.

The invention provides a polyurethane resin composition, its preparation method, and using method of the same used as filling material of railway plate type dreg-free track convex block. The polyurethane resin composition is mainly used as filling material of railway plate type dreg-free track convex block, and mainly includes: polyether or polyester polyol, isocyanate or prepolymer of the same, pigment, filling and other auxiliary agent. Advantages of the prepared polyurethane resin are: construction manufacturability is better, bonding to cement of cured resin is good; the polyurethane resin is resistant of ultraviolet ray irradiation, moisture, heat, ageing and fatigue, and owns appropriate elasticity and integrated mechanical capability.

The present invention relates to a recovery technological process of car and electronic wastes and its recovery system. Said system includes removing equipment, breaking equipment, sorting equipment, plastics regeneration treatment equipment and metal component deep-processing equipment. Said plastics regeneration treatment equipment includes oxidation device, granular material drying device, mixing device and granulating machine. Besides, said invention also includes a data processing equipment, including data base, memory, analysis module and comparison and operation module, etc.

The invention relates to a selective laser melting material additive manufacturing IN718 component, a system, and a heat treatment method and device. According to the IN718 component, during selective laser melting molding, the laser power ranges from 275 W to 800 W, the spot diameter ranges from 0.1 mm to 0.2 mm, the scanning speed ranges from 900 mm/s to 1400 mm/s, and the thickness of a powder laying layer ranges from 0.04 mm to 0.08 mm; the heat treatment method comprises the steps that the molded IN718 component is placed in a vacuum heat treatment furnace to be subject to vacuum annealing heat treatment. The heat treatment device comprises the vacuum heat treatment furnace. The system for the selective laser melting material additive manufacturing IN718 component comprises a 3D printer and further comprises the vacuum heat treatment furnace arranged behind the working procedure of the 3D printer. According to the system and the heat treatment method and device, residual stress generated in the printing process of the IN718 alloy component can be removed, a structure is obviously homogenized, corrosion resistance, toughness and the like are well improved, and the requirement of aerospace products for the IN718 alloy structural component can be met.

The invention discloses a novel process for preparing acetyl bromide, acetic acid and acetic ester from methane, which consists of reacting methane, oxygen and aqueous solution of HBr to obtain CH3Br and CO through catalytic reaction, then subjecting CH3Br and CO to carbonation reaction so as to prepare acetyl bromide in organic medium containing catalyst, then directly hydrolyzing the acetyl bromide and a certain amount of water into acetic acid, and reacting acetyl bromide and alcohols to obtain the acetic esters of the corresponding alcohols. The HBr can be regenerated as circular reaction medium and used again for the reaction for preparing CH3Br and CO from methane. The organic medium of the carbonylation reaction contains catalyst such as rhodium (Rh) compound, hydriodate and/or organo-phosphorus ligand, and a certain proportion of solvents.

The invention relates to extracting and drying methods in the process for preparing uhmwpe fiber, belonging to the field for polymers preparing technology. The method comprises that the uhmwpe powder, assistant and solvent is solidified by extruding after they are mixed in uniformity and solved sufficiently; the solvent is eliminated in extracting process and the extraction agent is eliminated by drying technology; the final product is formed by heat drawing. It is characterized in that because dichloromethane is used as the extraction agent, there is good safety, low boiling point and it is eliminated easily. Because countercurrent extraction operation is adopted in the extracting process and there is no ultrasonic wave, it is provided with low drying temperature, simple technology, high intensity of fiber product, high modulus and low oil percentage of fiber.

The invention discloses a method of medical nickel titanium alloy differential arc oxidation treatment, which comprises the following steps: (1) pre-treating surface; (2) putting into hydraulic fluid; choosing NiTi ally as positive pole and loading trough as negative pole; treating; (3)washing; drying; getting the product. This invention possesses simple method, which can inhibit discharging of Ni ion in nickel titanium alloy and reinforce safety.

The invention discloses a sea wave and wind power generation device which is characterized by comprising a closed cavity and at least three micro power generation structure bodies. Each micro power generation structure body is composed of an elastic component, piezoelectric material, a permanent magnet and a coil, the micro power generation structure bodies are fixed on the inner wall of the cavity, the axial lines where the three micro power generation structures are positioned are in a three-dimensional orthogonality state, the inner space of the cavity is of a certain size, therefore the device can be supported to float on the water, the piezoelectric material is fixed on the outer surface of the elastic component, each elastic component drives two power generation units simultaneously to output electric energy outward, one power generation unit outputs electric energy by adoption of the direct piezoelectric effect of the piezoelectric material, and the other power generation unit outputs the electric energy by adoption of the electromagnetic induction principle.

The invention provides a high temeperature resistant inorganic cementing compound, relating to an inorganic cementing compound. The invention overcomes the disadvantages that the prior cementing compound has poor heat resistance and low connecting intensity of a glued joint metal material and a composite material. The high temperature resistant inorganic cementing compound consists of an inorganic solvent and a curing toughening agent which are mixed according to a mass ratio of 1 to 0.7-1.5, wherein, the inorganic solvent is a reaction solution of aluminium phosphate and cupric oxide, soluble glass or a aluminium phosphate solution; the curing toughening agent consists of 50 to 95 portions of inorganic solidified agent and 5 to 50 portions of toughening strengthening agent by weight portion. The high temperature resistant inorganic cementing compound has good heat resistance and high connecting intensity of the glued joint metal material and the composite material.

The invention discloses a preparation method of a polyurethane pervaporation phenol/water separating membrane compounded by inorganic particles, and belongs to the field of pervaporation membrane separation. The polyurethane membrane basic material is obtained by polymerizing and mixing monomer hydroxyl-terminated polybutadiene, toluene diisocynate, 4,4'-diamine diphenylmethane solution, cyclodextrin and silica or carbon fiber powder. The preparation method comprises the following steps: reacting hydroxyl-terminated polybutadiene with toluene diisocynate to obtain blocked prepolymer, then adding 4,4'-diamine diphenylmethane solution and cyclodextrin as chain extenders to perform the chain extension, and adding inorganic modified particle silica or carbon fiber powder (using N,N-dimethylacetamide as solvent) to obtain prepolymer solution of polyurethane; casting the solution on a polyfluortetraethylene plate to form a membrane, solidifying for 1-1.5 hours at room temperature, and moving the membrane to an oven at 80 DEG C to thermally treat to obtain the polyurethane membrane compounded by inorganic particles. The preparation method disclosed by the invention is simple in process, and the prepared membrane has good heat and chemical stability and mechanical property.

The invention provides a deep well hydrocarbon reservoir temperature and pressure intelligent on-line monitoring device. A test plane and a transition plane are processed in the eccentric oil pipe, an optical fiber Bragg grating strain sensor is formed on the test plane through high-temperature bonding, one end of the optical fiber Bragg grating strain sensor is fixedly arranged on the test plane, and the other end of the optical fiber Bragg grating strain sensor passes through an optical fiber channel arranged between the test plane and the transition plane to reach the transition plane. One end, near the transition plane, of the optical fiber channel is connected with a stainless steel capillary pipe, the optical fiber penetrates into the stainless steel capillary pipe after being led out from the optical fiber channel, the stainless steel capillary pipe approaches to the transition plane and extends to a position near an optical fiber modem interface on the well, and the optical fiber is protected from being influenced by external severe environment in the whole process. The on-line monitoring device related by the invention realizes the deep well oil pipe structure integration, and has the advantages that the size is small, no additional auxiliary structure is adopted, the anti-interference capability is high, signals are stable and reliable, the response speed is high, and the like, and the on-line obtaining precision and the reliability of key information such as deep well hydrocarbon reservoir temperature and pressure can be obviously improved.

The present invention adopts the sisal hemp fiber as fiber raw material, and uses the nonwoven fabric of thermoplastic resin PP, film, powder material and its fiber as resin base body, and adopts thefollowing steps: pretreating sisal hemp fiber and making it into fiber felt, hot-pressing and forming, selecting and using a certain number of fiber felts, delaminating and sand wiching pp nonwoven fabric or film, under the condition of a certain temp. and pressure hot-pressing and forming or mixing PP fiber (PP powder) directly with sisal hemp fibre, making them into fiber felt and then hot-pressing and forming so as to obtain the invented sisal hemp fiber reinforced polypropylene composite material.

The invention relates to a stainless steel-ceramics nanometer composite material. The stainless steel-TiC nanometer composite powder is characterized in that it is obtained by mixing 316 stainless steel powder, Ti powder and C powder and ball milling, in which: 316 stainless steel powder of 70-90 wt%, Ti powder and C powder of 10-30 wt%, wherein, 80 wt% Ti powder and 20 wt% C powder of Ti powder and C powder, with less than 74um of average grading of Ti powder and C powder, and more than 99% of the purity. The composite material produced by the method has good corrosion resistance, good abrasion resistance, high Young's modulus, high chemical stability and long service life with simple process. Fine crystal grain powder metallurgy composite material produced by molding and sintering at high temperature the powder produced by the method has the advantages of corrosion resistance, abrasion resistance, high Young's modulus, high chemical stability and long service life.

The invention discloses a clay composite drying agent and a preparation method thereof. The drying agent mainly comprises clay and chitosan. The drying agent has the characteristics of high adsorptionrate, high absorption capacity, no toxicity, no taste, non-contact corrosion, bacteriostasis and the like, is low in preparation cost and simple in process, and is applicable to various occasions needing the drying agent. Because of no expansion or pulverization after moisture absorption, the drying agent can be repeatedly reused after being dried.

The invention belongs to the electrochemical electrolytic antifouling field and relates to a long-service-life maintenance-free electrolytic antifouling device which is suitable for being used in seawater; the main body of the device comprises a changeable direct current (DC) electrolytic power supply, an electrolytic anode, a nickel alloy cathode, a time relay, an electrolytic cell shell and a cable; the DC electrolytic power supply can output different directional current, and the time and size parameters thereof are set by a panel or a computer; the electrolysis anode is a metal platinum coating or a mixing metal oxide coating; when the electrolysis anode is electrolyzed over 30 days under various seawater environments, the current efficiency can not be reduced significantly; the cathode conducting the current uses a smooth flat nickel alloy material; the direction for the current leading to an electrolytic cell is switched once per 5 to 30 days; and the reverse current leading to the electrolytic cell every switch is 1 to 10 minutes and the current density is 10 to 100A/m<2>. The invention has the advantages of reliable principle, simple technology process, low cost, good antifouling effect, and long service life of equipment.

The invention belongs to the field of a soil internal pressure measuring method, and discloses a soil pressure measuring method with a variable measuring range based on a Bragg fiber grating. The method includes following steps: (1) selecting materials and dimensions of a cantilever beam and a film according to the dimension of a measured object and a measuring requirement; (2) installing a Braggfiber grating sensor on the cantilever beam to enable the Bragg fiber grating sensor and the cantilever beam to be tightly combined, connecting a free end of the cantilever beam and the film togetherthrough a rigid dowel bar, and connecting the Bragg fiber grating sensor to an optical fiber signal analysis processing device through an optical fiber; (3) fixing a fixed end of the cantilever beam to a sensor cavity, and placing a whole soil pressure transducer in the measured object; and (4) continuously measuring a strain value of the Bragg fiber grating sensor, and calculating a local pressure of the measured object. According to the method, the problem of precision measurement of soil pressure of different measuring ranges in the soil can be solved, the measuring requirement of the wide-span measuring range can be satisfied, the measuring precision of the sensor is high, and the security is high.

The invention discloses an antibacterial PVC wood plastic plate. The antibacterial PVC wood plastic plate is prepared from, by weight, 100 parts of PVC-1300, 20-30 parts of PVC-1000, 10-20 parts of C 9 petroleum resin, 40-50 parts of modified nano calcium carbonate, 6-8 parts of corn straw powder, 0.5-1 part of AC foaming agents, 0.3-0.6 part of sodium bicarbonate, 1-3 parts of calcium and zinc stabilizers, 2-3 parts of silane coupling agents KH550, 2-3 parts of ACR, 0.2-0.5 part of microcrystalline wax, 0.2-0.5 part of stearic acid, 3-4 parts of PVC foaming regulators ZB-530, 4-5 parts of molybdenum oxide, 0.5-1.0 part of ammonium polyphosphate, 1-1.5 parts of zinc borate, 0.2-0.4 part of nanometer titanium dioxide and 3-4 parts of polyhexamethyleneguanidine phosphate. Extrusion shaping is performed through a conventional extruding machine. The PVC plate has good antibacterial performance, meanwhile has good impact resistance and tensile strength and has the advantages of being resistant to chemical corrosion and low in cost.

The invention discloses cobalt-based alloy powder for laser remanufacturing of the housing of a rolling mill, which is characterized by comprising the following components in percentage by mass: 0.8 to 1.4 percent of C, 26 to 32 percent of Cr, 3 to 6 percent of W, 0.6 to 1.4 percent of Mo, 1.2 to 1.8 percent of Ni, 0.2 to 0.6 percent of Mn, 0.8 to 2.4 percent of Si, 1.2 to 4.8 percent of Fe, 0.4 to 1.6 percent of B, 0.2 to 0.6 percent of Ce, 0.2 to 0.6 percent of Hf and the balance of Co. The cobalt-based alloy powder is suitable for the laser deposition of large-area ineffective working face of the housing of the rolling mill, and by depositing the alloy powder, the housing of the rolling mill can be reused and the oxidization resistance, corrosion resistance and washing corrosion resistance of the housing of the rolling mill are improved. The online repair problem of the housing of the rolling mill is solved effectively.

A silicoaluminophosphate molecular sieve with a CHA (chabasite) structure and a synthesis method thereof are provided. The invention relates to an SAPO (silicoaluminophosphate)-34 molecular sieve and a synthesis method thereof. The molecular sieve is characterized in that the molecular sieve micropore contains a template agent SDA (Structure-Directing Agent), the molecular sieve crystal surface is slightly enriched with silicon, and ratio of outside surface silicon content to crystal bulk silicon content is 1.50-1.01. The SDA is organic amine with a (CH3)2NRN(CH3)2 structure, and R is C2-C5 saturated straight chain or straight chain alkyl. After being roasted in air at 400-700 DEG C, the molecular sieve can be used as a catalyst and a gas adsorbent of acid catalyzed reaction and oxygen-containing compound conversion alkene preparation reaction.

The invention discloses a LaCeNi magnetic microwave absorbing material and a preparation method thereof. The stoichiometric proportions of a molecular formula of the magnetic wave absorbing material are as follows: 10.0%-16.7% of La, 0-6.0% Ce and 83.3% Ni. The LaCeNi magnetic microwave absorbing material is prepared by the following main steps: smelting La, Ce and Ni metals, of which the purities are greater than or equal to 99.90% as raw materials under argon protection; carrying out heat treatment on a cast ingot in vacuum at 800-1050 DEG C; quenching with ice water; and carrying out ball-milling to form powder after mechanically crushing. The LaCeNi magnetic microwave absorbing material has relatively excellent microwave absorbing property in a 2-18GHz of microwave band; when the thickness of a compound is 1.5mm, the minimal absorption peak can reach about 40.1dB; the LaCeNi alloy disclosed by the invention has the advantages of good wave absorbing property, wide absorbing frequency band, simple preparation process, good corrosion resistance and the like in the 2-18GHz of microwave band; and the LaCeNi magnetic microwave absorbing material disclosed by the invention is suitable for preparation of microwave absorbing products of requiring wide absorbing frequency band, good wave absorbing property and good corrosion resistance in the magnetic wave absorbing material.

The invention relates to a biological fermentation tank which comprises a motor, a speed reducer, a stirring device, an upper cover, a fermentation bucket and a support. The upper cover is arranged at the upper end of the fermentation bucket and provided with a stirring opening, and the stirring device is arranged in the stirring opening and comprises a stirring shaft and stirring blades arranged on the stirring shaft. The stirring blades comprise the first stirring blade and the second stirring blade, the second stirring blade is arranged at the lower end of the stirring shaft, the first stirring blade is a flood dragon rotary blade, and the second stirring blade is a frame type stirring blade. Coatings are arranged on the outer sides of the stirring blades, the fermentation bucket is provided with an inner barrel body, an outer jacket and a shell in sequence from inside to outside, a heat preservation device is arranged between the outer jacket and the shell, a heating device is arranged between the inner barrel body and the outer jacket, and a sensor is arranged in the heat preservation device. The stirring blades are formed by combining the flood dragon rotary blade and the frame type stirring blade, therefore, reactants can be comprehensively stirred and can be effectively prevented from being pasted to the inner wall of the fermentation bucket, and the reaction rate is increased.

The invention discloses a system device with co-action of ultrasonic wave and far infrared ray on an engine, comprising a fuel action unit, a machine oil action unit, a cooling water action unit, an ultrasonic generator, a fuel temperature sensor and a singlechip. The action units are provided with far infrared ceramics and ultrasonic energy converters which are connected with the ultrasonic generator. The electric heaters of the three action units are electrically connected with the heating temperature controllers. The heating temperature controllers, the ultrasonic generator and one or more sensors are connected with a singlechip through an interface circuit. By using sound pressure generated in liquid medium of the ultrasonic wave, the system device raises temperatures of the fuel, machine oil and water medium so as to excite the far infrared ceramics in the medium and change macromolecule groups of the medium into micromolecule groups or single molecules under the action of far infrared ray, and the medium is activated adequately. The invention can remarkably enhance the dynamic property, the economical efficiency and the environmental-friendliness of the engine. The system device can be used as a fuel filter and a machine oil filter.

The invention relates to a preparation method of a carbon fiber brake block, relating to the technical field of automobile brake systems. Aiming at the problems of thermal conductivity and high-temperature controllability existing in the current asbestos-free organism-type (NAO type) automobile brake block, the invention provides the preparation method of the carbon fiber brake block which is prepared from the following raw materials including the following components in percentage by weight: 35-55% of carbon fiber, 15-35% of phenolic resin and 20-40% of powdery packing. The prepared carbon fiber brake block has thermal conductivity and electrical conductivity as well as thermal resistance and corrosion resistance of a metal material; and as the rise of temperature, the friction coefficient is kept constant and even is slightly increased, therefore, the carbon fiber brake block has very excellent brake stability.

The invention discloses water-based wood paint modified by vegetable oil and a preparation method of the water-based wood paint. The water-based wood paint is prepared from, by weight, 60-85 parts of aliphatic series modified polyurethane dispersoid, 1-3 parts of hardness-enhancing resin, 7-12 parts of water, 1-3 parts of wax emulsion, 2-5 parts of coalescing agents, 0.2-0.7 part of wetting dispersant, 0.1-0.5 part of flatting agents, 0.2-0.7 part of deforming agents, 1-2 parts of antifreezing agents and 0.3-0.7 part of thickening agents. According to the water-based wood paint modified by the vegetable oil and the preparation method of the water-based wood paint, formula adjustment is utilized, the environment-friendly type water-based hardness-enhancing resin is matched, and the hardness-enhancing resin comprises solvent-free water-based modified aldehyde ketone resin dispersoid. The water-based wood paint can reach or exceeds oil-based wood paint in physical and chemical technical index, and all comprehensive properties are excellent.

The invention discloses a tridentate copper chelate catalyst and a method for synthesizing dimethyl carbonate thereby. The catalyst belongs to the chelate of cuprous chloride, tridentate heterocyclic compound and macromolecule derivant thereof. Methyl alcohol, carbon monoxide and oxygen serve as raw materials; and at the temperature of 25-300 DEG C, the raw materials react for 0.5-20 hours under the total reaction pressure of 0.2-10 MPa and catalyst concentration of 0.1-1.0 mol/ L to synthesize dimethyl carbonate. The average time-space conversion rate of methyl alcohol is more than or equal to 0.7 g DMC/ gcat.h, and the average selectivity of dimethyl carbonate is more than or equal to 99%. The catalyst of the invention has simple preparation technology, high catalyst activity and favorable selectivity and stability; no accessory ingredient needs to be added, a reaction system nearly has no corrosivity on a reactor, and catalyst, reactant and reaction products are easy to be separated; thus, the invention can improve the conversion rate of methyl alcohol and dimethyl carbonate selectivity, has quite small corrosivity on a high pressure reactor and has favorable industrial application prospect.

The invention relates to a laser cladding and on-line machining repair method for a roughing mill housing roller positioning groove, and belongs to the technical field of surface modification and equipment repair. Machining equipment comprises a 2500 movable boring and milling machine, an all-solid-state laser device, a mechanical hand, a manipulator, a pneumatic powder feeder, a self-made construction platform and the like. The technological process includes the steps of building the platform, leading in the equipment, adjusting, centering and fixing the equipment, performing rough machining, performing precision measurement for flaw detection, performing laser cladding, performing precision measurement for flaw detection, fine machining, performing precision measurement for flaw detection and tracking to verify the effect. The laser cladding and on-line machining repair method has the advantages that the equipment strength is not affected, hot stress influence during repair welding is avoided, while equipment accuracy is recovered, the outage time can be shortened, and the repair cost can be reduced; a metal base material can be effectively protected from abrasion or corrosion by selecting a repair material, the problem is prevented from occurring again, and the service life of the equipment is greatly prolonged; as only the surface of the base material is melt in a micro mode in the laser machining process, the area of a laser cladding heat affected zone is one tenth that of a heat affected zone of argon arc welding.

The invention discloses a low-temperature sintering high-heat conduction ceramic paint suitable for metal base material and a preparation method and an application thereof. The paint comprises the following raw materials: low-temperature molten glass powder, iron oxide red, copper-chrome black, cerium dioxide, boron nitride, iolite micro powder, alumina micro powder, chromium sesquioxide micro powder, 20-50% of silicon aluminium sol, 0.5-3% of an auxiliary agent, and the balance of water. The method comprises the following steps: a metal matrix is processed, then the surface of the metal matrix is uniformly coated with a paint and dried in shade; and the coated metal matrix is heated at the temperature of 650-900 DEG C to form the low-temperature sintering high-heat conduction ceramic paint. The paint has the advantages of easy acquisition of the raw materials and low cost, is tightly combined with the metal matrix, has effective high temperature oxidation resistance, acid corrosion resistance and abrasion resisting effects of a heating furnace flue heat exchanger on a metal heat exchanger, ceramic coating surface is smooth and clean, slag buildup of the heat exchanger is effectively reduced, the service life of the metal heat exchanger is prolonged, and the heat exchange efficiency effect is increased.