85results about How to "Applicable temperature range" patented technology

The invention relates to a combined getter. The combined getter is characterized in that: an air suction material and an oxidant are put into a carrier to form the combined getter; the air suction material can be a precursor; the oxidant can be one or two oxides selected from iron and nickel, and 5 weight percent of one or more precious metals selected from gold, platinum and palladium can be added into the oxidant to the maximum extent so as to improve the performance of the oxidant; and the oxidant and the precious metals in the oxidant can be prepared by a precipitation method, a coprecipitation method or a mixing method. The invention has the advantages that: when metal oxides of the iron, cobalt, the nickel, copper and the like are used as the oxidant, water absorbed on the surface of the oxidant can seriously influence the reaction activity of the oxidant, but the influences of water vapor can be reduced and the reaction activity of the oxidant can be improved by adding an appropriate amount of Pd into the oxidant. When a trace amount of Au or Pt is added into the oxidant, the influences of the water vapor are greatly reduced; and the metal oxides of the iron and the nickel have higher thermal stability in vacuum, environmental harmful substances can be prevented from being used, and the highest applicable temperature of the conventional combined getter can be expanded.

The invention belongs to the field of polyurethane, and concretely relates to a polyurethane combined material for furniture sponge and a preparation method thereof. The combined material is prepared by mixing a composition A and a composition B, the composition A is prepared from polyether polyol, polymer polyol, a cross-linking agent, a foaming agent, a foam stabilizer , a pore-opening agent and a catalyst, and the composition B is prepared from polyether polyol, an isocyanate and a pore-opening agent. When the combined material is used, the composition A and the composition B are mixed according to the weight ratio of 100:75-110 and injected into a die, so that high-bearing low-density furniture sponge is prepared. The combined material employs low-volatilization low-atomization raw materials, and possesses advantages of low smell, good fluidity, wide applicable temperature scope and the like. The furniture sponge prepared from the combined material possesses the advantages of being basically odorless, safe, nontoxic, free of defects on the surface, good in elasticity, excellent in handfeel, low in density, good in bearing property and the like. The invention also provides a preparation method for the combined material, and the technology is reasonable.

The invention relates to a medicament for fast preventing the malignant float grasses and the water algae and the application thereof, belonging to the pesticide formulation technical field, which is characterized in that the medicament comprises from 40% to 90% of a plant vinegar fluid, from 5% to 35% of an organic acid, and from 1% to 20% of pesticide addition agent, the plant vinegar fluid is either a bamboo vinegar fluid, a wooden vinegar fluid, and (or) grass vinegar fluid, the organic acid is one of or a mixture of more than one of a formic acid, an acetic acid, a propionic acid, a 2-methyl propionic acid, an ethyl acetic acid, a 4-hydroxy ethyl acetic acid, a pentanoic acid, a benzoic acid, a 2,6-hydroxy benzoic acid, a 3-hydroxy-4-methoxy benzoic acid or a 3-methoxy-4-hydroxy benzoic acid. The medicament has the advantages of fast destroying the chlorophyll, stopping the plant to do the photosynthesis, commonly killing the water algae in a half hour and the float grass in three hours by spraying, having low production cost, strong killing capability, wide adaptable temperature range and pH value range. The active component of the invention has the advantages of being the natural-occurring substance, no corrosion, nonirritant, safe use, and reliability, easy biodegradation, and no secondary pollution.

The invention discloses a temperature detecting fire alarm device made of thermoelectric materials, comprising a thermoelectric converter, a signal processing circuit and an alarm, wherein the thermoelectric converter is used for converting variation of the ambient temperature into voltage signals and outputting the voltage signals to the signal processing circuit; the signal processing circuit is used for filtering and comparing the received voltage signals and then driving the alarm to ring, thus realizing alarm on fire; and the alarm is used for sending out an acousto-optic signal to promote alarm. The thermoelectric converter adopts the structure of concatenated thermoelectric pairs. Each group of thermoelectric pairs 5 is equal to a small power supply and that the output voltage is obtained through repeated addition of the voltage of each small power supply can be known according to the power supply concatenation rule in the circuit, thus the fire alarm device is environmentally friendly, without needing transmission parts, and has small system volume and wide temperature application range.

The invention relates to an eddy current heating high temperature mechanical testing device, which belongs to the technical field of mechanical testing and relates to a mechanical testing device for rapidly heating a sample by using an eddy current technique to obtain a high temperature testing environment. The device adopts eddy current rapid heating to meet the requirements of high-rate temperature rise and wide temperature zone heating of the sample in a high temperature mechanical test. An airtight box structure is adopted, and a vacuum pump is used for vacuum pumping to meet vacuum environment requirements. Upper and lower chucks adopt the overall structure, which is good for neutrality and have small measurement errors. The device consists of a clamping unit, a loading unit, a heating and cooling unit, an airtight box, and a reference frame. The device has the characteristics of rapid sample temperature rise, large applicable temperature zone, high heating efficiency, compact structure and simple operation. The device has good neutrality, reduces measurement errors, and has high testing accuracy. An aerospace high temperature thermal shock environment can be accurately simulated, and the mechanical experiments of high temperature materials are completed.

The invention relates to a method for preparing nano-structured Zn2SnO4 on stainless steel wires. The method includes steps: adding tin chloride pentahydrate, zinc acetate dihydrate and sodium hydroxide into ethylenediamine and aqueous liquor, dispersing mixture uniformly and placing the mixture into a cleaned stainless steel wire mesh; leading the stainless steel wire mesh to react at the temperature ranging from 170 DEG C to 200 DEG C and taking out the reacted stainless steel wire mesh; and obtaining two nano-structured Zn2SnO4 products with different shapes by means of regulating the proportion of the ethylenediamine to water. The molar ratio of the tin chloride pentahydrate to the zinc acetate dihydrate to the sodium hydroxide is 1:2:6-1:3:4, the proportion of the ethylenediamine to the water is 30:0-0:30, and the reaction time ranges from 12 hours to 24 hours. The method has the advantages that operation is simple, cost is low, the purity of the products is high, and the like. The nano-structured Zn2SnO4 products with the different shapes are more favorable for electronic transmission; and by the aid of a stainless steel base, on the one hand, absorption of a photoelectrode to scattered light and reflected light is improved, on the other hand, adaptability of a photovoltaic cell to transport environments, installation environments and work environments are greatly enhanced.

The invention relates to a cleaning agent for cleaning of pervious concrete with exposed aggregate, belonging to the field of surface cleaning of pervious concrete with exposed aggregate. The cleaningagent comprises the following main raw materials by mass: 2-6% of a retarder, 0.05-0.3% of a water retaining agent, 0.01-0.1% of a consistency regulator, 1 to 5% of a coloring agent and 85-98% of a filler. The cleaning agent of the invention is applicable in a wide environmental temperature range, low in spray amount fluctuation sensitivity, easy to color, easily controllable in penetration depthand long in controllable time, and can well realize surface aggregate exposure effect.

The invention relates to a thermochemical hydrogen production reaction performance evaluation system and a thermochemical hydrogen production reaction performance evaluation method based on a solar light-concentrating simulator. The system comprises a raw material input part, an evaporator/pre-heater, a micro multi-channel reactor, a condenser, a chromatograph, a flow pipeline system and a solar light-concentrating simulator, wherein the raw material input part comprises a liquid input part and a gas input part, the liquid input part and the gas input part are converged before the evaporator/pre-heater, the evaporator/pre-heater is a large chamber tank performing heating through electricity or solar energy, and is provided with a spraying device inside, the pre-heater simultaneously performs primary heating on a gas, the micro multi-channel reactor is connected to the evaporator/pre-heater and the condenser through pipelines, the chromatograph is used for detecting the components of the generated mixed gas, and the solar light-concentrating simulator comprises a high-power xenon lamp light source and an elliptical high-reflectivity reflection cover.

The invention relates to high-temperature-resistant and large-temperature-difference-resistant cement grout for well cementation in an oil field. The cement grout is prepared from components of raw materials in parts by weight as follows: 600 parts of G-grade oil well cement, 30-36 parts of an HS101L fluid loss agent, 8-20 parts of an HS201L retarder, 1.8 parts of an HS-301S dispersant, 150 parts of quartz sand, 30 parts of silica fume, 1.8 parts of an HS-XF1S suspension stabilizer, 280-300 parts of water and 1 part of bis(2-ethylhexyl) sulfosuccinate sodium salt, wherein the grain size of the quartz sand is 80-120 meshes, the grain size of the silica fume is 300-400 meshes, and the content of silicon dioxide is 90% or higher. Liquid-phase raw materials are added to a grout mixing container and mixed uniformly; solid-phase substances are added to a solid-phase container and stirred uniformly, the solid-phase mixture is added to the grout mixing container, finally, a defoaming agent is added, and the mixture is stirred uniformly. The cement grout can be used under the condition of 50-180 DEG C, has prominent large-temperature-difference-resistant performance and can effectively avoid a super-retarding phenomenon caused by large temperature difference.

The invention discloses a multi-functional blocking remover and a preparation method thereof. The multi-functional blocking remover is composed of functional components with different percentage contents and oilfield produced water, and a front near-well slug blocking remover, a multi-effect degradation slug blocking remover and a rear yield increase slug blocking remover are prepared according to a certain proportion. The multi-functional blocking remover provided by the invention has the advantages of immediate preparation, non-oxidizing property, simple construction process, high gel breaking rate (96.1% or more), wide applicable temperature range (20-120 DEG C), low corrosion rate (lower than 0.04 g/(m<2>. h), good safety and the like, can effectively remove various blockages such as scale, polymers, polymer gel and oil sludge generated in the ASP flooding profile control process, realizes recycling of oilfield produced water, is beneficial to improving the communication capacity between oil-water wells and delaying scale deposition, and can achieve multiple effects of dissolving, plug removal, deposition prevention, low-permeability reservoir pollution reduction, injection increase and pressure reduction and the like during application.

The present invention provides a method for using plant oil after-cut fraction for production of green lubricating oil, and the process comprises the following steps: various main components are separated by distillation of plant crude oil, after-cut fraction and a residue accounting for 6-15% of the total tower kettle substrate are heated to about 150 to 200 DEG C in a vacuum distillation tower device for thermal insulation distillation for more than 30-40 hours under the condition of maintaining the vacuum degree in-0.98mpa, wherein the vacuum distillation tower device has the tower height of 7-15m, and the plate number of more than 100, and use a 80-100 mesh stainless steel filler, kettle bottom residual liquid is discharged after cooling, the kettle bottom residual liquid is placed for cooling to 50 DEG C to 60 DEG C, and filter with a 150 mesh filter screen to obtain plant oil distillation kettle bottom polymer, the green lubricating oil is prepared by further addition of composite additives, and the green lubricating oil is similar with mineral base oil in density, viscosity, flash point, pour point and other indexes, and is good in thermal stability, biodegradable, low-cost, and environment friendly.

The invention discloses an Epipremnum aureum water culture nutrient solution which is composed of the following components in parts by weight: 100 parts of water, 40-45 parts of seaweed juice, 20-26 parts of citric acid, 10-17 parts of boric acid, 5-10 parts of potassium dihydrogen phosphate, 0.2-4 parts of zinc sulfate, 0.05-2 parts of magnesium sulfate, 0.05-1 part of copper sulfate, 0.02-1 part of manganese sulfate and 0.02-0.5 part of sodium chloride. The Epipremnum aureum water culture nutrient solution can enable the root of the Epipremnum aureum to develop more quickly, thereby effectively absorbing the nutrients and avoiding the problem of yellow spots of leaves. The Epipremnum aureum water culture nutrient solution has wide temperature application range, and is free from temperature influence.

The invention discloses a heat insulation composition with a heat insulation effect. The problem that the volume weight of the heat preservation composition is large when the heat insulation effect isimproved in the prior art is solved. The heat insulation composition comprises 10-65 wt% of vitrified microbeads, 10-50 wt% of asbestos, 1-20 wt% of aluminum silicate wool, 5-20 wt% of bentonite, 1-10 wt% of glass fibers and 1-10 wt% of a penetrant. The heat insulation composition has the advantages of excellent heat insulation performance, low volume weight, reduction of the thickness by 50% orabove under a condition that the surface temperature is same to that of the aluminum silicate wool, and remarkable energy-saving effect due to great reduction of the heat dissipation area, so the adiabatic temperature range is greatly expanded, and the working temperature range can reach -40-1000 DEG C.

The invention discloses a composite material for a water lubricated bearing, and belongs to the technical field of a polymer composite material. The technical scheme of the invention is that: the composite material comprises the following raw materials in parts by weight: 100 parts of rubber, 2 to 12 parts of active agent, 0.5 to 2 parts of anti-aging agent, 20 to 70 parts of carbon black, 0.5 to2 parts of vulcanizing agent, 0.5 to 1.5 parts of accelerant and 1 to 50 parts of basalt fibers; and the raw materials above are used for preparing according to a special preparation method. The composite material has the beneficial effects that the composite material disclosed by the invention has the advantages of wide applicable temperature, excellent wear resistance, low wear rate and long service life under the water lubricated condition; the composite material uses nitrile rubber, carboxy nitrile rubber and hydrogenated nitrile rubber which are excellent in heat resistance and excellentin wear resistance as base materials; and by adding the basalt fibers and using the special preparation method, wear resistance of the rubber, particularly wear resistance in a water environment at ahigh temperature, is promoted.

The invention relates to a blast rotary-wheel dehumidification device for a blast furnace. The device mainly comprises a rotary-wheel dehumidifier which is provided with a rotary-wheel dehumidification area and a rotary-wheel regeneration area and can perform circulating dehumidification and then perform regeneration, wherein two sides of the rotary-wheel dehumidification area are provided with an inlet air duct and an outlet air duct respectively, and two sides of the rotary-wheel regeneration area are provided with a regenerated-air inlet air duct and a regenerated-air outlet air duct respectively; an inlet valve is arranged on the inlet air duct; and the outlet air duct is connected with a blower. The device is characterized in that: a heater, a ventilator and a regenerated-air air valve are sequentially arranged on a pipeline of the regenerated-air inlet air duct; and a heater steam supply pipe and a heater condensing drain pipe are communicated with the heater respectively. After the air is dehumidified by using the device, the temperature of the air can be raised to a certain degree, so that the process of the dehumidification of a surface cooler, namely the process that the air is required to be super-cooled and then heated is avoided, and the reheating energy consumption is reduced. The device is high in efficiency and compact, takes steam as a heat source, and fully utilizes steam resources of metallurgic plants.

The invention relates to an integrated heat management system for new energy electric vehicle batteries and a control method thereof. The output end of a temperature sensor is connected with a batteryelectrode temperature acquisition module; an RISC (reduced instruction set computer) circuit control system is connected with the battery electrode temperature acquisition module and is also connected with a heating TEC (thermoelectric cooler) module and a cooling TEC module; a thermal balance heat pipe is pacakaged in an equalizing plate; the front end of a heat transfer heat pipe is connected with the equalizing plate; the tail end of the heat transfer heat pipe is connected with an energy storage unit; the middle of the heat transfer heat pipe is connected with the heating TEC module and the cooling TEC module; heat is guided out of a battery box via the heat transfer heat pipe, so that the heat dissipation problem of the inner closed space of the battery box is solved; the heating TECmodule is electrified to produce heat to heat up the battery box; the cooling TEC module is electrified to absorb heat so as to cool the battery box. The problem can be solved herein that the prior art has control complexity and poor battery temperature control uniformity.

The invention relates to a water conservancy mechanical facility, in particular to a vertical hydraulic inner tube slurry pump. The vertical hydraulic inner tube slurry pump comprises a vertical mortar cylinder, a mortar inner tube is arranged in the mortar cylinder, one-way floating ball valves are arranged in an inlet and an outlet of the mortar cylinder respectively, the mortar cylinder is connected with a plunger type water cylinder, the plunger type water cylinder is connected with a hydraulic oil cylinder, and a heat dissipating position indicator is arranged on the plunger type water cylinder. A plunger in the water cylinder is pushed by the hydraulic oil cylinder to do reciprocating motion to squeeze water in the water cylinder so that mortar in the mortar inner tube can be discharged outwards. The vertical hydraulic inner tube slurry pump has the advantages of being simple in structure, convenient to operate, high in pressure and efficiency, large in lift, environmentally friendly and safe and reliable to operate and consuming little energy, and the mortar conveying flow is large.

The invention relates to a hard alloy composite sealing structure and a preparing technology thereof. The hard alloy composite sealing structure comprises a valve seat machining part and a sealing ring machining part. In the valve seat machining part, a casting is fixedly arranged on a valve seat machining clamp inclining by 4-15 degrees, and after the sealing face thickness of 4-8 mm is reserved, a sealing face of the valve seat is roughly turned, and surfacing of a first hard alloy layer is conducted on the sealing face of the valve seat; and in the sealing ring machining part, a sealing ring blank is arranged on a sealing ring machining clamp of a lathe, and after the sealing face of the sealing ring is finely turned, surfacing of a second hard alloy layer is conducted on the sealing face of the sealing ring. According to the hard alloy composite sealing structure and the preparing technology thereof, the machining technology cost is low, the sealing precision is high, the product can achieve zero friction, zero leakage and both-way pressure bearing and achieves real high performance, a sealing pair is all metal, and once after closing is conducted in place, sealing is very reliable, and the application temperature range is wide.

The invention discloses a fused salt phase change heat storage element and a preparation method thereof. The fused salt phase change heat storage element is of a core-shell structure and comprises aninner core and an outer shell. Wherein the inner core is a molten salt ball; the shell is made of a carbon-based heat conduction material and cement; wherein the radius of the fused salt ball accountsfor 29%-90% of the radius of the fused salt phase change heat storage element; the sum of the ratio of the radius of the fused salt ball to the radius of the fused salt phase change heat storage element and the ratio of the thickness of the shell to the radius of the fused salt phase change heat storage element is smaller than 100%; wherein the carbon-based heat conduction material accounts for 1.0-50.0% of the total mass of the carbon-based heat conduction material and the cement. The solid-state phase change heat storage element has the advantages of being low in cost, high in heat conduction, simple and safe in process, convenient to operate and suitable for mass production.

The metal surface protecting liquid is compounded with phosphoric acid 160 weight portions, potassium molybdate 2 weight portions, tartaric acid 15 weight portions, thiourea 7.5 weight portions, AEO-9 0.2 weight portions, hydrogen peroxide 0.3 weight portions and water 1000 weight portions. The preparation process includes adding phosphoric acid into water via stirring, adding the other components via stirring, and letting stand of 24 hr. The present invention has the advantages of wide application temperature range, no need of heating in use, fast filming and homogeneous film with high adhesion force to prevent rust.