44results about How to "Has the advantage of energy saving" patented technology

The invention relates to a low-loss microwave dielectric ceramic material and a preparation method thereof, which belongs to the technical field of an electronic information functional material and device. The low-loss microwave dielectric ceramic material comprises a main crystal phase and additives, wherein the main crystal phase comprises MgTiO3, Mg2SiO4 and CaTiO3, and the main crystal phase contains little Mg2TiO4; the additives comprise MnO2, Co2O3, CeO2 and Nb2O5; the loss of the material is detected to be low (Qxf falls in the range of 65000 to 85000GHz), the dielectric constant is adjustable (between 9 and 20), the frequency temperature coefficient is stable (within +/-10ppm/DEG C), the machinability is good, and the application requirement of a microwave communication industry can be met. The preparation method is a solid-phase sintering method and has the characteristics of simplicity, environmental friendliness and low cost, and is easy to control.

The invention provides a microwave dielectric ceramic material and a preparation method thereof, belonging to the technical field of electronic materials. The microwave dielectric ceramic material comprises the following components in percentage by mass: 25-35% of MgO, 60-68% of TiO2, 1-10% of CaO, 0-2% of SiO2, 0-2% of MnO2, 0-2% of Nb2O5 and 0-2% of CeO2; the microwave dielectric ceramic material is prepared by proportioning the MgO, TiO2, CaO, SiO2, MnO2, Nb2O5 and CeO2 according to the mass percentage of each component; performing ball milling and mixing; pre-calcining a mixture at a temperature in a range of 1050-1200 DEG C and sintering the mixture at the temperature in a range of 1250-1360 DEG C. In the invention, the microwave dielectric ceramic material is prepared by utilizing atraditional solid-phase sintering method, the process is simple and the cost is low; according to the prepared microwave dielectric ceramic material, the Q*f value is in a range of 63,000-83,000 GHz,the relative dielectric constant epsilon r is in a range of 20-22, and the temperature coefficient of resonance frequency is within +/-10 ppm/DEG C, so that the preparation requirements of a high-performance microwave device can be met.

The invention discloses a (SrCa)TiO3-LaAlO3-based microwave dielectric ceramic material and a preparation method thereof and belongs to the technical field of electronic information functional materials. The (SrCa)TiO3-LaAlO3-based microwave dielectric ceramic material comprises a base material and additives. The base material is (1-x)Sr(1-y)CayTiO3-xLaAlO3, x is greater than or equal to 0.40 and is less than or equal to 0.50 and y is greater than or equal to 0.05 and is less than or equal to 0.20. The additives comprise B2O3, Co2O3, MnO and CeO2. A main crystalline phase formed from the base material is a composite perovskite SrTiO3-LaAlO3 phase. A sintering temperature in air is in a range of 1530-1580 DEG C. A Q*f value is in a range of 45000-55000GHz. A relative dielectric constant is in a range of 35-43. A resonant frequency temperature coefficient is +/-10ppm/DEG C. The (SrCa)TiO3-LaAlO3-based microwave dielectric ceramic material is prepared by the traditional solid-phase ceramic synthesis technology, has the advantages of cheap raw materials, environmental friendliness and low cost, and is convenient for batch production and application popularization.

A B-substituted BNT microwave dielectric ceramic material and its preparation method belong to the technical field of a functional material. The general chemical formula of the microwave dielectric ceramic material is Ba3.75Nd9.5Ti18-y(M,N)yO54, wherein y is less than or equal to 2.5 and greater than or equal to 0.6; the microwave dielectric ceramic material is prepared by steps of: burdening BaO, Nd2O3, TiO2, oxides of metallic elements M and N according to mole ratio of the general chemical formula, carrying out ball-milling, presintering and sintering; an oxide of the element M is Nb2O5; and an oxide of the element N is one or more compounds selected from Al2O3, MgO, ZnO, Co2O3 and NiO. According to the invention, simultaneous substitution of high and low valence elements is carried out in the B position of Ba6-3xNd8+2xTi18O54. The microwave dielectric ceramic material prepared by a one-step synthesis process has high dielectric constant, low loss characteristic and low frequency-temperature coefficient, can meet requirements in the microwave communication industry, and is especially suitable for manufacturing of RFID tags.

The invention discloses a preparation method of linen flat-strip fabric. The preparation method comprises the following steps that raw flax with a disintegration degree larger than or equal to 250 count is selected and made into linen roving; bio-enzymatic treatment is conducted, and degumming treatment is conducted on the linen roving; the linen roving treated with bio-enzymes is made into linen S twist yarn and linen Z twist yarn, and the count of both the linen S twist yarn and the linen Z twist yarn is 36 metric count; the linen S twist yarn is put into a humidification storehouse for humidification curing; warping and drawing-in treatment is conducted on the linen Z twist yarn in sequence; the linen Z twist yarn is regarded as warp yarn, the linen S twist yarn is regarded as weft yarn, a loom is used for weaving, and fabric dyeing is conducted on woven gray cloth to obtain the linen flat-strip fabric. According to the preparation method, the prepared linen fabric has the advantages that dyeing is even, colors are beautiful, and the design and color and the cloth type are novel and fashionable.

The invention provides a high-medium single-layer miniature ceramic capacitor substrate material. Raw materials comprise main ingredients and doping agents. Chemical components of the main ingredients are SrTiO3. The doping agents are composed of, by mass, mwt% of Nb2O5, nwt% of SiO2, pwt% of Y2O3, qwt% of CaSnO3 and rwt% of composite oxide additives. The preparation method includes batching, ball-milling, drying, pelleting, forming, glue discharging, reduction atmosphere sintering and oxidation heat treatment. No Pb, Cd or other volatile or heavy metal elements are contained in the formula of the high-medium single-layer miniature ceramic capacitor substrate material, and the high-medium single-layer miniature ceramic capacitor substrate material is an environment-friendly and pollution-free medium ceramic material. The sintering temperature of ceramic is 1340-1400 DEG C, the dielectric constant is high, and a certain energy-saving advantage is achieved; the raw materials are sufficiently supplied at home, price is low, and the high-medium single-layer miniature ceramic capacitor substrate material is suitable for manufacturing high-performance communication components in the modern communication technology.

The invention relates to a magnesium oxychloride-based immature soil curing agent and a preparation method and application thereof. The magnesium oxychloride-based immature soil curing agent is prepared from, by weight, 100 parts of light burned magnesium oxide powder, 50-250 parts of a magnesium chloride solution, 0.1-2.0 parts of toughened crack-resistant fiber, 0.5-5.0 parts of a strengtheningauxiliary and 0.8-8.0 parts of water resistant additives. The preparation method comprises the steps that a magnesium oxide solution is put into a stirrer, the toughened crack-resistant fiber, the light burned magnesium oxide powder, the strengthening auxiliary and the water resistant additives are added, and stirring is conducted for a period of time. For the application, 100 parts by weight of immature soil and 130-900 parts by weight of the curing agent are taken, mixed and stirred to be uniform, and curing sample slurry is obtained, then the curing sample slurry is put into a mold to be cured and formed, with a plastic film covered to keep moisture, and standing and maintenance are conducted for 7-50 d in the environment that the temperature is 5-65 DEG C, and the relative humidity is45-85%. Compared with an existing curing agent, the curing agent is high in strength and good in water resistance.

The invention discloses an automatic incubator and a working process thereof. The incubator comprises a box body, a processor, a balancing air inlet pipe, egg rack carts, a fan, an air inlet, heat exchange coil pipes, a CO2 (carbon dioxide) sensor, an air door and temperature sensors, wherein the CO2 sensor is arranged in the box body; the air door is arranged in the middle of the top plate of the box body; the processor is respectively connected with the CO2 sensor and the air door; the temperature sensors are arranged on a side plate corresponding to a circulating air flue in the box body; the heat exchange coil pipes are arranged between two adjacent rows of the egg rack carts in the box body; the heat exchange coil pipes are provided with joints which are connected with an external hot water source and an external cold water source; the processor is respectively connected with the temperature sensors and the joints; and the processor is used for controlling the communication of the heat exchange coil pipes with the external hot water source or the external cold water source. The working process of the incubator comprises the following steps of: temperature control, humidity control, egg turning on the egg rack carts and CO2 control. The automatic incubator and the working process can enable the simulation of an incubation environment in the incubator to be more precise andthe regulation and control to be simpler and more feasible.

The invention discloses an independent controllable intake-exhaust two-stroke (capable of being changed into four-stroke) internal-combustion engine system which is used for solving the defects including low fuel efficiency, large emission pollution, participation of engine oil in combustion and the like of a two-stroke internal-combustion engine by applying the independent controllable intake-exhaust system, so that the energy is saved, the emission is reduced, the pressurized working conditions of the two-stroke internal-combustion engine are realized, the defect that the power per liter of a four-stroke internal-combustion engine is lower than that of the two-stroke engine is solved, and a completely new function of freely converting between the two strokes and the four strokes in one internal-combustion engine is creatively realized. Moreover, the independent controllable intake-exhaust two-stroke internal-combustion engine system is simpler in structure, lighter, provided with theoretical maximum power which is twice that of the conventional four-stroke pressurizing internal-combustion engine, integrated with the advantages of the two-stroke internal-combustion engine and the four-stroke internal-combustion engine and capable of making up the defects of the two-stroke internal-combustion engine and the four-stroke internal-combustion engine, and therefore, the independent controllable inlet-exhaust two-stroke internal-combustion engine system is an internal-combustion engine system with a completely new principle and a completely new manufacturing method, and a novel power choice is provided for the vehicle industry and other equipment manufacturing industries.

The invention relates to a process for synthesizing glyphosate by an alkyl ester method, the method comprises the following steps: heating or alkalifying a methanol solution of paraformaldehyde or formaldehyde to depolymerize, adding glycinate, uniformly stirring to carry out addition reaction, adding no or less triethylamine, adding dimethyl phosphite and a small amount of triethylamine to carry out condensation reaction after the addition reaction, and hydrolyzing with hydrochloric acid, adding alkali to crystallize, washing and drying to obtain the glyphosate. Glycine salt is used for replacing glycine, the glyphosate crystallization yield is not affected, the addition reaction efficiency is higher, the temperature is low, the time is short, the process has the characteristics of being simple to operate, energy-saving, environment-friendly and high in selectivity, the production cost of glyphosate synthesis can be greatly reduced (for example, the use amount of hydrochloric acid, liquid caustic soda and steam is greatly reduced), mother liquor treatment is simple, and the process has the advantages of reaction, cost and environmental protection.

The invention discloses a worm wheel type ratchet wheel type hoisting mechanism. The worm wheel type ratchet wheel type hoisting mechanism comprises a motor, a winding drum and a pawl type worm wheeland worm one-way force transmission speed reducing mechanism, the motor comprises an ascending motor and a descending motor, and the pawl type worm wheel and worm one-way force transmission speed reducing mechanism comprises an output shaft, a centering disc, a ratchet wheel, a worm wheel, a pawl and a worm, wherein the ratchet wheel is fixed on the output shaft and rotates along with the output shaft, the centering disc and the worm wheel are sleeved on the output shaft through bearings and do not rotate along with the output shaft, the centering disc is located on the left side of the ratchet wheel, the worm wheel is located on the right side of the ratchet wheel, one end of the connecting shaft is fixed on the centering disc, the other end of the connecting shaft is fixed to the worm wheel, the pawl is arranged on the connecting shaft, one end of the spring is fixed to the centering disc, the other end of the spring is fixed in the middle of the pawl, the worm wheel is meshed with the worm, the ascending motor is connected with the left end of the winding drum, the right end of the winding drum is connected with the output shaft, and the descending motor is connected with the worm. The worm wheel type ratchet wheel type hoisting mechanism has an automatic locking function, and the ascending motor and the descending motor only need to rotate unidirectionally, so that the failure rate is low.

The invention discloses an organic catalyst for synthesis of glyphosate. The catalyst is an alkoxy compound including alkali metal in the first main group, also comprises alkoxy metal compounds whichare prepared through a reaction between fresh anhydrous alcohol and anhydrous hydroxides or oxides of the first main-group alkali metal or the alkali metal, and is one or a combination of more of thealkoxy metal compounds in the form of an alcohol solution of the alkoxy metal compounds. The glyphosate synthesizing process comprises the steps: adding the organic catalyst to a methanol solution ofparaformaldehyde or formaldehyde, performing a depolymerization reaction, adding triethylamine and glycine after completion of the reaction, performing stirring for an addition reaction, adding dimethyl phosphite after completion of the reaction, performing a condensation reaction, adding hydrochloric acid for hydrolysis after completion of the reaction, and then performing crystallization, washing and drying so as to obtain glyphosate. The reaction speed and reaction selectivity of glyphosate synthesis can be improved through the specific catalyst, the depolymerization reaction has a high speed and thoroughness, and the addition reaction also has high selectivity, so that the yield of the glyphosate product reaches 3% or above; and the process has the advantages of reactions, energy saving, cost and environmental protection.

The present invention relates to a method, a system and a device for pushing digital information to a terminal through traditional audio broadcasting. The method comprises the following steps: S1, converting multimedia data into an information-carrying audio signal; S2, modulating and broadcasting the information-carrying audio signal through a broadcasting station; S3, demodulating the audio signal through a radio receiver circuit by a terminal; S4, recovering the information-carrying audio signal to the multimedia data by the terminal; and S5, caching the multimedia data locally and providing an interactive interface for data browsing, playing and management by the terminal. In addition, complementation of advantages of traditional broadcasting and digital broadcasting and smooth transition from analog signals to digital signals can be achieved through mixed arrangement of audible audio and information-carrying audio according to periods of time. Through adoption of the scheme of the present invention, a user can receive digital multimedia broadcasting without replacing equipment, and the problem that mobile network traffic cost is required for acquiring information outdoors at present is solved. The technical scheme of the present invention has the advantages of economy, convenience, timeliness, energy saving, easy popularization, simple operation and maintenance, etc.

The invention discloses an energy-saving air-conditioner, which comprises the following parts: two indoor sets within two evaporators and outdoor set within compressor and condenser, wherein the outlet of two indoor sets connects liquid accumulator through pipe; the outlet of liquid accumulator connects the inlet of two compressors separately; the inlet and outlet of two compressors connect the condenser through one-way valve; the other end of condenser two outlet connects the evaporator inlet of two indoor sets through paralleling pipe of capillary and electromagnetic valve; the equilibrate capillary is connected among the paralleling pipe of two capillaries and electromagnetic valve.

The invention relates to a process for extracting and concentrating a dilute aqueous formaldehyde solution by using a composite solvent. A process device comprises a recovery extraction tower, a concentration extraction tower, a desolventizing rectifying tower and a plurality of heat exchangers, wherein tower equipment in the process is a plate type tower in which a plurality of sieve plates are arranged, a solvent is selected as a continuous phase during operation, and the aqueous formaldehyde solution is a dispersed phase. The process comprises the following specific steps: completely extracting formaldehyde in a dilute formaldehyde solution into a composite solvent phase in a recovery extraction tower, allowing the composite solvent phase to flow out from the top of the tower, removing most of a cosolvent through heating and evaporating, enabling the composite solvent phase to enter the bottom of a concentration extraction tower, and allowing the content of formaldehyde in the solvent phase to be continuously increased under the action of adding concentrated formaldehyde into the tower top until a concentration requirement is met. The composite solvent adopted by the process can obviously improve the partition coefficient of formaldehyde under the condition of a low concentration, and a concentrated product is obtained by further concentration through fractional extraction, so efficient purification and phase separation are realized, and an energy-saving and effective production method is provided for concentration of the low-concentration aqueous formaldehyde solution.

The invention discloses a sand prevention type oil well pump oil production process. The sand prevention type oil well pump oil production process is mainly composed of a screw pump and a viscous oilpumping structure. An underground structure is the screw pump disposed in an oil field, includes a joint, a sucker rod and other equipment, and is used for collecting oil of the oil field; and at thesame time, the underground structure is further provided with an annulus sand setting structure and oil production power, the oil production power includes a motor, an electric cabinet and other structures, various driving operations in the oil production are completed, the operation of the screw pump can be stably controlled, and the technological process of the oil production is improved. The sand prevention type oil well pump oil production process does not involve too much motion equipment due to the concise structure of the screw pump, so that hydraulic loss is not generated, and a certain energy-saving advantage is achieved.