1340results about How to "Will not corrode" patented technology

The invention provides an insulating and heat-conducting double-sided adhesive tape and a preparation method thereof. In the insulating and heat-conducting double-sided adhesive tape, the outer layers on both sides are release paper, and a single layer of insulating and heat-conducting adhesive is arranged between the two layers of release paper. Or the outer layers on both sides are release paper, a single-layer substrate is arranged between the two layers of release paper, and an insulating and heat-conducting adhesive is arranged between the substrate and the release paper. The preparation method is as follows: mixing heat-conducting medium and solvent, adding insulating heat-conducting glue, stirring, coating and drying, and the preparation is completed. The adhesive tape of the invention has the advantages of good thermal conductivity, electrical insulation, stability at room temperature, easy die-cutting, reworkable characteristics, and easy operation.

The invention discloses a method for cooperatively promoting agglomeration growth of PM (particulate matter) 2.5 and treating desulfuration wastewater in an evaporation manner and a device of the method. The method particularly includes steps that agglomeration liquor prepared by desulfuration wastewater, high polymer adhesive and wetting agent is sprayed into an inlet flue of an electric precipitator and is evaporated by the aid of heat of flue gas, in an evaporation process, the wetting agent promotes dust to enter drops of the agglomeration liquor, the high polymer adhesive is connected with PM2.5 via a polymer chain with polar groups, the grain diameter of the PM2.5 is prompted to be enlarged, so that the PM2.5 can be gathered by the follow-up electric precipitator, the desulfuration wastewater is evaporated completely, suspended matters and dissolvable pollutants in the wastewater are converted into solid to be dissolved out, and the suspended matters and the dissolvable pollutants in the wastewater, together with dust in the flue gas, are gathered by the electric precipitator. The device consists of a boiler, an air preheater, the electric precipitator, a desulfurizing tower, a hydraulic cyclone, a desulfuration wastewater clarification tank and an agglomeration liquor preparation tank, and a double-fluid atomizing nozzle is arranged in the flue between the air preheater and the electric precipitator.

The invention discloses an environment-friendly water-based cleaning agent which is characterized by comprising the following components in percentage by weight: 15-60% of antirust agent, 5-20% of surfactant, 0.1-0.5% of nonferrous metal corrosion inhibitor, 0-0.5% of bactericide and the balance of water. The environment-friendly water-based cleaning agent disclosed by the invention has the beneficial effects of no toxicity or phosphorus, excellent antirust performance, favorable inter-process antirust effect, wide application range, suitability for cleaning various metals including black metal, aluminum alloy and copper alloy, no corrosion to nonferrous metal, excellent cleaning capability for oil stain with higher viscosity, long service cycle and effective range, simplicity and practicability in use and maintenance, multiple functions for efficiently removing oil, preventing rusting and the like, no harm to body health and no adverse effect on the environment.

The invention discloses a process and a plant for preparing adipic acid by catalytically aerobically oxidizing cyclohexane. The process comprises the following steps: dissolving 1 to 50 PPM of a catalyst including single metalloporphyrin or mu-oxo bimetallic porphyrin or a mixture of single metalloporphyrin, mu-oxo bimetallic porphyrin and transition metal salt or oxide in cyclohexane; introducing 5 to 12 atm of air or oxygen-rich or oxygen-poor air into a multi-stage oxidation reactor with a gas distributor; controlling the reaction temperature at 140 to 160 DEG C; oxidizing cyclohexane for 45 to 120 min; feeding the mixture of the oxidation reaction into a flash separator to carry out flash evaporation at the temperature of 78 to 155 DEG C and under the pressure of 0.1 to 1.0 atm, so that the low-boiling-point products such as cyclohexane, cyclohexanol and cyclohexanone change to gas and are separated from adipic acid with the content above 80%; continuously circularly oxidizing the low-boiling-point products to separate and purify the high-boiling-point oxidation product; and purifying and separating by the existing technique to obtain fine adipic acid product. The process can directly prepare adipic acid by aerobically oxidizing cyclohexane, wherein the conversion rate of cyclohexane is up to 95%, and the yield of adipic acid is up to 70%.

The invention relates to a semi-solid fluidized molding method and a device for metal parts. Liquid metal with the temperature from 0 to 40 DEG C above liquid phase is guided into a pulp container, and then an ultrasonic radiation is lowered down to 1 to 30mm above the liquid surface, ultrasonic radiation is started, and the slurry is cooled at the speed ranging from 0.1 DEG C per second to 3 DEG C per second. The ultrasonic radiation can be pulse radiation or non-radiation pulse with ultrasonic frequency ranging from 12kHz to 80kHz, radiation volume power 5W / cm<3> to 100W / cm<3>, and radiation time from 15s to 1000s; the slurry is poured into molding equipment to be molded into parts after the radiation. The molded part has dense organization, fine and equally distributed grains. The device of the invention comprises a pulp container, a thermostat, an ultrasonic generation and a control unit, a sleeve, and a mold and an injection rod and a molding device. The fluidized molding method and device can be used for fluidized molding of various alloy parts made from aluminum, magnesium, tin, copper and iron etc. The method has the advantages of non-contaminated pulp, long service life of ultrasonic equipment and high part production efficiency.

The invention discloses aluminum alloy semisynthesis cutting liquid and a preparation method thereof. The aluminum alloy semisynthesis cutting liquid is composed by weight of 12%-20% of mineral oil, 9%-15% of surfactant, 8%-12% of antirust agent, 1%-2% of aluminum corrosion inhibitor, 3%-7% of lubricant, 8%-12% of extreme pressure agent, 0.5%-1% of defoamer, 0.5%-1% of fungicide and the balance, water. The preparation method includes sequentially adding the surfactant, the antirust agent, the aluminum corrosion inhibitor, the lubricant, the extreme pressure agent, the defoamer, the fungicide and the water into the mineral oil and evenly stirring and mixing the mixture to obtain the aluminum alloy semisynthesis. The aluminum alloy semisynthesis cutting liquid has excellent performance on aluminum corrosion inhibition performance, corrosion resistance, lubricant performance, anti-rust performance, defoaming performance, use period and the like.

The invention relates to a fume sampling probe which mainly consists of a sample pipe, a sample flange, a sample probe mounting plate, a filter, an air cylinder, a standard air inlet, a sample gas outlet, an electric heater, a backblowing air heater, a puller screw, a lever, an internal backblowing hole, an external backblowing hole, a temperature probe, a temperature controller, an electromagnetic valve, a gas-type fitting, a case body and an electrical gas circuit. The invention has the advantages that filter elements of the filter made of resistant material are changed and clean for use alternately, a special backblowing technology method is realized through the electrical gas circuit, the energy consumption is saved, the backblowing effect is good, only one maintenance is needed in one year, the heating temperature can be randomly set, the automatic backblowing period and time can be freely set according to the on-site fume condition, the service life is long, the running is stable and reliable, and the running cost is low, thereby being widely applied to a fume discharge continuous monitoring system of a fixed pollution source in the fume sampling and processing field.

The invention belongs to the technical field of petroleum and natural gas well completion, and relates to a supercritical carbon dioxide completion fluid. The supercritical carbon dioxide completion fluid is prepared by mixing a preflush spacer fluid, a supercritical carbon dioxide flushing solution and a post-flush spacer fluid according to a volume ratio of 2-5:100:1-5. When the supercritical carbon dioxide completion fluid is used, the supercritical carbon dioxide flushing solution and a cementing slurry are prepared on the ground, the preflush spacer fluid and the post-flush spacer fluid are prepared, the preflush spacer fluid, the supercritical carbon dioxide flushing solution, the post-flush spacer fluid and the cementing slurry are sequentially pumped into a well head through a present fluid device in order to flush, the cementing slurry solidifies after the flushing, and an alkaline substance is injected from an annulus to remove carbon dioxide in the supercritical carbon dioxide flushing solution in order to prevent pollution of carbon dioxide to atmosphere and corrosion of carbon dioxide to bushings. The supercritical carbon dioxide completion fluid has the advantages of easily available raw materials, scientific principle, use convenience, good cementing effect, low cost, effective reduction of the thickness of mud cakes, and improvement of the cleanliness and roughness of the mud cakes.

The invention relates to a refining agent for aluminum and aluminum alloy. The refining agent is characterized by mainly comprising the following components in percentage by mass: 30 to 85 percent of NaCl, 5 to 40 percent of Na2SiF6, 5 to 40 percent of Na2SO4, 2 to 20 percent of CaF2 and 0.5 to 5 percent of C6C16; and the refining agent also can comprise one or more of CaMg(CO3)2, Na3AlF6, Na2S2O3 and NaF. The potassium-free refining agent provided by the invention has good slag forming performance, strong gas and impurity removing capability and low cost; and the aluminum ash produced by refining the aluminum and the aluminum alloy through the refining agent can realize recycle.

The invention relates to a high-viscosity and low-melting-point metal conductive paste and a preparation method and an application thereof. The high-viscosity and low-melting-point metal conductive paste is characterized in that the metal conductive paste is prepared by uniformly mixing low-melting-point metal and metal powder based on a certain proportion and by a certain method. The metal powder can improve the viscosity and electrical conductivity of the low-melting-point metal. By adopting the high-viscosity and low-melting-point metal conductive paste of the invention, the contact resistance between electronic components can be significantly reduced, the contact surface temperature of electronic components can be reduced, and the working life of electronic components can be prolonged as much as possible. The high-viscosity and low-melting-point metal conductive paste of the invention has high electrical conductivity, a remarkable electric conduction effect and a long service life, and can be widely used in the technical fields of electric power and energy.

The invention provides a preparation method of biomass-based nitrogen-containing porous carbon with the advantages that simplicity is realized; the implementation is easy; the cost is low. According to the method, the in-situ doping of nitrogen atoms in the carbon material preparation process is realized by a one-step foaming method; cheap and reproducible protein-rich plants are used as carbon precursors; the in-situ doping of nitrogen atoms in the carbon material preparation process is favorably realized, so that the doping content is controllable, and the distribution is uniform. All raw materials are renewable resources; green and environment-friendly effects are achieved; simplicity is realized; the obtaining is easy; the resources are rich; the cost is low. Meanwhile, the method provided by the invention has the advantages that the nitrogen-doped porous carbon material with the large specific surface area can be obtained without complicated multistep operation; the preparation process is simple; the use of high-pollution chemical reagents such as ZnC12, strong base and strong acid is avoided; the environment-friendly effect is achieved; the operation is convenient; equipment cannot be corroded in the production and use processes; the method is suitable for large-scale production.

The invention relates to a method for manufacturing a printed circuit board by using a novel and improved semi-additive process. The method includes the following steps that: a) a dielectric layer is prepared, and copper foil is pressed on the dielectric layer, so that a copper foil conductive layer can be formed, and as a result, a composite structure substrate can be formed, the roughness of the rough surface of the copper foil being smaller than 4 microns; b) the thickness of the copper foil conductive layer is reduced to 0.2 to 5 microns; c) through holes or blind holes are formed in the dielectric layer and the copper foil conductive layer; d) conductive treatment is performed on the copper foil conductive layer and the hole walls of the blind holes or through holes, so that a seed layer can be formed; e) a photosensitive film is bonded on the surface of the substrate, and an electroplating barrier layer is formed on the substrate through pattern transfer; f) electroplating is performed on the substrate; g) a metal protective layer is formed on the surface of a circuit pattern through using a chemical plating or electroplating method; h) the electroplating barrier layer is removed; i) the bare seed layer and copper foil conductive layer are removed through adopting a flash rusting method, and the circuit pattern formed through electroplating is reserved; j) the metal protective layer is removed; and k) processing in steps from a) to j) is performed on the circuit board repeatedly, so that a multi-layer circuit board can be formed.

The aluminum electrolytic capacitor consists of anode aluminum foil, electrolyte paper, cathode aluminum foil, and is produced through winding the electrolyte paper into roll core, soaking the roll core inside electrolyte solution, setting the roll core inside aluminum casing and sealing. The present invention features the electrolyte solution comprising main electrolyte 10-30 wt%, solvent 65-89.95 wt%, and additive 0.05-5 wt%; the main electrolyte of ammonium salt compound and with water content of 15-95 %; the organic solvent of alcohol or ether; and the additive of waterproof compound. The electrolyte paper is made of Manila hemp and soaked with the electrolyte solution. The mouth of the aluminum casing is sealed with rubber ring of rubber mixture. The aluminum electrolytic capacitor has electrolyte solution well adsorbed onto the anode aluminum foil and the cathode aluminum foil, no corrosion to leads, high sealing performance and other advantages.

The invention provides a resin grinding wheel and a manufacturing method thereof, which belong to the field of grinding tools and are used for solving the problem of the production of harmful sulfur dioxide by pyrite serving as a lubricating agent existing in the conventional resin grinding wheel. The resin grinding wheel comprises a grinding body and a reinforcing sheet which is arranged inside the grinding body for enhancing the revolving strength of the grinding body, wherein 90-105 parts by mass of corundum is taken as a grinding material the grinding body; 2-8 parts by mass of phenolic aldehyde resin liquid and 6-25 parts by mass of phenolic aldehyde resin powder are taken as bonding agents; and 1-10 parts by mass of cryolite and 1-5 parts by mass of polytetrafluoroethylene powder are taken as fillers. The invention further provides a manufacturing method of the resin grinding wheel. In the grinding wheel, the polytetrafluoroethylene powder instead of pyrite is taken as a lubricating agent, so that sulfur dioxide is not produced and other pollution is avoided in the using process.

The invention provides a method of depositing a metal organic framework material by an oxygen auxiliary cathode. The method comprises the following steps: (1) preparing a reaction precursor solution which is composed of a 5-50mM metal source, a 10-250mM organic ligand and an organic solvent; and (2) carrying out electrochemical deposition on the surface of a conducting substrate of the cathode toobtain the material. The method provided by the invention does not corrode the deposited electrode, the selecting range of the conducting substrate is wide, the prepared MOF material is regulatable inshape, dimension and thickness in nanoscale, pure, free of adding a supporting electrolyte and low in cost, and can be synthesized in one step. The metal organic framework is simple in method and operation, and industrial production is conveniently achieved.

The invention discloses electric flocculation method and device for recovering and processing desulfurized wastewater. The electric flocculation method for recovering and processing desulfurized wastewater comprises the following steps of: collecting desulfurized wastewater to enter an electric flocculation reactor, then, carrying out solid-liquid separation, recovering the separated clear effluent water in a clinker-flushing system of an electric power plant or directly discharging the separated clear effluent water, conveying the sludge to dewater in a mud-processing system, and returning the effluent water of the mud-processing system to a water intake system. Compared with the prior art, the electric flocculation technology is adopted to substitute a complicated chemical method for recovering and processing the desulfurized wastewater, can effectively remove pollutants in the wastewater, reaches a heavy metal processing rate up to 95-99 percent, a chlorine-processing rate over 80 percent and removal rates of ammonian, and the like over 90 percent, greatly shortens the processing time, improves the processing efficiency and saves the investment cost. Moreover, the electric flocculation processing device has small size, extremely small floor occupation, good environmental-protection performance and low cost without additional flocculating agents.

The invention relates to a conductive screening material, in particular to a conductive low-smoke zero-halogen flame retarding and oil resisting cable sheath material and a preparation method thereof. The conductive screening material comprises the following basic components: 100 parts of ethylene-vinyl acetate rubber, 50-100 parts of magnesium hydroxide, 50-80 parts of conductive black, 10-30 parts of graphite powder, 5-10 parts of zinc borate, 10-25 parts of plasticizer, 2-5 parts of lubricant, 1-2 parts of antiager, 10-30 parts of flame retarding synergist, 2-3 parts of vulcanizer and 1-2 parts of vulcanization assistant. The preparation method comprises the four steps of material preparation, mixing, extrusion and tabletting. The conductive low-smoke zero-halogen flame retarding and oil resisting cable sheath material has the advantages of high conductivity, good oil resistivity, excellent flame retarding effect, no peculiar smell, easy stripping and high heat resistance level, and can pass the environment protection authentication of RoHS (Restriction of the use of certain Hazardous Substances Registration), REACH (Evaluation, Authorization and Restriction of Chemicals) and the like.

The invention discloses three-dimensionalgraphene composite aerogel. High-molecular material nano fiber with a biomass polysaccharide structure is compounded with oxidized graphene through a surface electrostatic-force effect, and then the composite aerogelis prepared by utilizing hydrazine hydrate reduction and a method for high-temperature pyrolysis in an inert atmosphere. The invention further discloses a preparation method of the three-dimensionalgraphene composite aerogel. The method for preparing the three-dimensionalgraphene composite aerogel is simple, easy to operate, large in specific surface area, uniform in pore size distribution and good in electrical conductivity, and the chemical reactivity is improved.

The invention discloses a high-efficiency polishing lathe with flexible self-adapting shape follow-up polishing and grinding performance, which comprises a horizontal conveyor, a reciprocating swing system, a lifting-type self-rotating mechanism and a fixing-type revolution mechanism; wherein, a second motor and a power supply device are arranged on a supporting bracket fixed on a swing beam; the second motor is connected with the center of a rotating table through one end of main shaft for the rotating table; the rotating table is arranged the swing beam; a first motor is arranged on the rotating table through a cylinder and the support; the output shaft of the first motor is connected with a drive shaft connected with a universal flexible coupler; an abrader is arranged at the lower end part of the universal flexible coupler; the first motor also moves upward and downward under the action of the cylinder when driving the abrader to rotate. The invention has an advantage of being widely applied in surface polishing grinding in plate building material such as polished ceramic tile and stone material.

The invention discloses a cleaning agent for stones and stone cultural relics and a preparation method thereof. The cleaning agent can remove yellow spots from the surfaces of the stones and the stone cultural relics, wherein the yellow spots comprise rust yellow spots and organic yellow spots. The cleaning agent comprises organic acid, a reducing agent and water, wherein the organic acid mainly comprises monocarboxylic, dicarboxylic and polycarboxylic low-carbon acid (--COOH), sulfonic acid (--SO3H) and the like; and the reducing agent mainly comprises amine compounds. Cleaning liquid and waste liquid are neutral, do not have corrosion effect on the stones, and do not damage the environment. The cleaning agent has oxidation resistance, low cost, extremely low concentration and a simple operating method, is convenient to carry, can be prepared in advance, and can also be prepared on site.

The invention discloses a box-type substation having multiple heat radiation modes. The box-type substation includes a pedestal and a box body which is arranged above the pedestal. The box body is connected to a top cover thereabove. The top cover is provided with two cylindrical upper air outlets at the places corresponding to a transformer chamber and a low-pressure chamber. Each upper air outlet is provided with an exhaust hood. A ventilation wall of the exhaust hood is evenly molded into exhaust openings thereon. The exhaust openings assume longitudinally-arranged bar shaped. The exhaust hood is provided with a centrifugal fan therein, and a lower part of the exhaust hood is provided with longitudinally arranged top cover push rod. According to the invention, the box-type substation has compact structure, reasonable design, easy construction, and excellent heat radiation effects.

The invention discloses a method for synthesizing diphenyl carbonate by heterogeneous ester interchange. The method uses methyl carbonate and phenol as raw materials and hetero-atom mesoporous molecular sieve as a heterogeneous catalyst to synthesize the diphenyl carbonate through ester interchange. The method mainly solves the problems of difficult separation and recycling of the catalyst, low yield of the diphenyl carbonate, and the like. The hetero-atom mesoporous molecular sieve as the catalyst can be prepared through a direct synthesis method, and can also be prepared through a post synthesis method. The ester interchange product of the method has high yield and good selectivity, wherein the yield reaches 45.1 percent and the selectivity reaches 99.9 percent; and particularly the molecular sieve catalyst used by the method has the advantages of no pollution to environment, no corrosion to equipment, easy separation and recycling, and the like, and can be widely applied to production of the diphenyl carbonate.

The invention provides an amorphous alloy metallic phase corrosive agent which comprises nitric acid, hydrochloric acid, lopsided sulphite and water. The metallic phase corrosive agent cannot form a pollution layer on the surface of an amorphous alloy sample and overmuch corrode a crystalline phase in amorphous alloy and is beneficial to observing the crystalline phase of the amorphous alloy so as to evaluate the quality of the amorphous alloy.

The invention discloses an amide preparing method of indoor temperature ionic liquid catalytic ketoximes through Beckmann rearrangement reaction, which is characterized by the following: possessing indoor ionic liquid with chlorosulfonylation functional group as reacting dielectric; transmitting into functional group under mild reacting temperature and shorter reacting time; recycling the ionic liquid catalytic system.

The invention discloses an elastic body material for refrigerator sealing strips and preparation method thereof. The elastic body material for refrigerator sealing strips consists of hydrogenation styrene resin, rubber filling oil, polypropylene, mineral filler, weather resistant agent, compatibilizer and processing aids. The elastic body material for refrigerator sealing strips is manufactured by extrusion graining with counter-rotating twin-screw extruder after the raw material is mixed in high-speed mixer. Halogen material and o-benzene plasticizer which is harmful to human health will not be introduced in practical production process of the elastic body material for refrigerator sealing strips. The thermoplastic elastomer material produced in the invention has the advantages of light weight, high resilience, high welding strength, easy colorizing and good low-temperature resistance. There is no need for the treatment of high temperature sulfidation when extrusion moulding is operated with the above material. Decomposion of toxic gas and corrosion of production equipments will not happen during the process of extrusion moulding, and scraps can be recovered and re-used.

The invention relates to a preparation method of a scouring agent for aluminum and an aluminum alloy, which comprises the following steps: firstly, selecting ingredients according to the following percentages by weight: 30-85% of NaCl, 5-40% of Na2SiF6, 5-40% of Na2SO4, 2-20% of CaF2 and 0.5-10% of C6Cl6; uniformly mixing and fully stirring the selected ingredients; placing the mixture into a crucible, carrying out overheat melting to eliminate crystal water, and preserving the temperature for 30-60 minutes; and finally, processing after cooling to obtain the scouring agent. The method has the advantages of simple process and low cost. The prepared scouring agent does not contain sylvite, so that sylvite can not be introduced into the scouring and purifying treatment procedures, and therefore, an aluminum electrolysis cell can not be seriously corroded as a result of the introduction of sylvite when aluminum ash is directly recycled in the cell.

A catalyst with high activity and selectivity and able to be recovered easily for preparing diphenyl carbonate from dimethyl carbonate and phenol ester by ester exchange is basically and proportionally prepared from the oxide of Mo and the oxide of Cu through co-deposition or grinding, and calcining at 300-900 deg.C.

The invention relates to a method for preparing a multiphase catalyst used for ester exchange synthesis of diphenyl carbonate from methyl carbonate and phenol. The catalyst is obtained by immersion-graft reaction of SiO2 as carrier, TiO2 as active component and triethylamine in the presence of organic solvents, followed by calcination. The invention solves the problem of low ester exchange efficiency in the prior art. The TiO2 / SiO2 catalyst prepared by the inventive method has higher catalytic activity and ester exchange selectivity in the ester exchange synthesis of diphenyl carbonate from methyl carbonate and phenol, wherein the phenol conversion rate reaches 48.1% and the overall selectivity of ester exchange products (methoxyphenyl carbonate and diphenyl carbonate) is more than 99.5%. Additionally, the inventive method has the advantages of easily-available raw materials, low cost and simple process.

The inventive belt pulley comprises bull and pony wheels integral formed by spinning of flat cold-rolled sheets. The process of manufacturing the belt pulley consists in: blanking; multistretching; shaping; spinning; punching and surfacing. The blanking is stretched into the semi-finished products for the two-stage coaxial multi-wedge pulley on the oil press by the multistretching and the times of multistretching can depend on the product conditions. The shaped and edged semi-finished pulley once-through complete the following process: spinning the big end and then spinning the small end by the spinning process.

The invention relates to a spherical chlorite mesoporous composite material, a preparation method of the spherical chlorite mesoporous composite material, the spherical chlorite mesoporous composite material prepared by the method, a supported catalyst containing the spherical chlorite mesoporous composite material, a preparation method of the supported catalyst, the supported catalyst prepared by the method, the application in ketalation of the supported catalyst, and a preparation method of cyclohexanone glycerol ketal by using the supported catalyst, wherein, the spherical chlorite mesoporous composite material comprises chlorite, a mesoporous molecular sieve material with a three dimensional cubic pore structure, and a mesoporous molecular sieve material with a hexagonal pore structure. The supported catalyst prepared by using the spherical chlorite mesoporous composite material as the carrier in the invention can improve the conversion rate of the reaction raw materials greatly in ketalation.