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1069results about How to "Achieve uniformity" patented technology

Heat-dissipating double-sided adhesive tape with ultrahigh heat conductivity coefficient

The invention discloses a heat-dissipating double-sided adhesive tape with an ultrahigh heat conductivity coefficient. Ethylene glycol or triethylamine is added into a polyamic acid solution, the resulting mixture is put in an oven in a vacuum environment and maintained at 100 DEG C for 0.9-1.1 hours, the temperature is raised to 300 DEG C and maintained for 0.9-1.1 hours, followed by natural cooling, to produce a polyimide film; the polyimide film is heated up to 250 DEG C from room temperature and then heated up to 500 DEG C, and further heated up to 1200 DEG C at a rate of 9-11 DEG C/min, to produce a prefired carbonized film; the prefired carbonized film obtained in the step 4 is rolled by a calendar; the rolled product is heated up to 2400 DEG C at a rate of 19-21 DEG C/min and maintained for 0.9-1.1 hours and then heated up to 2900 DEG C at a rate of 19-21 DEG C/min and maintained for 1.8-2.2 hours, followed by cooling, to produce a fired graphite film; and subsequently the graphite film is rolled to obtain a graphite coating. The heat transfer performance of the double-sided adhesive tape in both the vertical and the horizontal directions are improved, so as to prevent local overheat of the adhesive tape and ensure uniformity of heat transfer performance of the adhesive tape.
Owner:SUZHOU SIDIKE NEW MATERIALS SCI & TECH

Sectional type low temperature roller cut tobacco drying equipment

ActiveCN101611921AAchieve processing strengthAchieve uniformityTobacco preparationEngineeringSEMI-CIRCLE
The invention discloses a sectional type low temperature roller cut tobacco drying equipment, comprising a barrel body, a feeding cover, a discharging cover and moisture exhaust pipelines, wherein, the feeding cover and the discharging cover are arranged on the two ends of the equipment and are respectively connected with a moisture exhaust pipeline on the equipment; the inner barrel wall of the barrel is uniformly distributed with semi-circle pipes and hot wind introducing pipelines; the barrel is internally provided with a cooking plate; wherein, the barrel is a sectional barrel with at least a high temperature zone and a low temperature zone; the barrel body is internally installed with a low hot wind pipeline and a high hot wind pipeline which is contained on the low hot wind pipeline; the two pipes and the barrel body are connected to form a wire spoke which can revolve synchronously; the inlets of the low hot wind pipeline and the high hot wind pipeline are respectively connected with a hot wind heater and an air blower which are externally corresponded to the inlets; the cooking plate is arranged in radial direction in the high hot wind pipeline. As the barrel temperature and the hot wind temperature can be respectively adjusted and controlled sectionally, the adjustment of height difference of the temperature of two-section barrel body and hot wind temperature and the cross current between hot wind and materials can achieve different processing strength and uniformity of cut tobacco drying, and can improve entirely comprehensive aesthetic quality and processabilityresistance of tobacco.
Owner:QINHUANGDAO TOBACCO MACHINERY

Stage method for improving uniform expansion effect of granular fruits and vegetables during microwave spouted drying

The invention discloses a stage method for improving the uniform expansion effect of granular fruits and vegetables during microwave spouted drying, which belongs to the technical field of the processing of fruit and vegetable foods. The method mainly comprises the steps of: performing selection, washing, dicing, enzyme killing by blanching, and color protection treatment on fruit and vegetable raw materials; placing the pretreated fruit and vegetable cubes into a microwave spouted drying bed; setting the microwave power and the air inlet heating temperature; then performing the combined drying of stage hot air drying and microwave drying; and controlling different spouted air intakes at different drying stages, wherein the uniform expansion effect of products is improved during the quick microwave drying. The method has the advantages that the method ensures that the granular fruits and vegetables are evenly heated in a microwave field through a hot air and microwave spouted drying stage method, has quick moisture evaporation, ensures that the fruits and vegetables have porous structures after the drying, effectively improves the expansion degree of the products, also improves the expansion effect of the products and ensures the uniform expansion of the products while the granular fruits and vegetables are quickly dried, and has the characteristics of good preservation of nutrient content and good qualities of color luster, sense and the like.
Owner:JIANGNAN UNIV +1

Method for preparing rare-earth oxide dispersion strengthened fine-grained tungsten material

A method for preparing a rare-earth oxide dispersion strengthened fine-grained tungsten material, comprising: according to a condition that a mass percentage of rare-earth oxide is 0.1-2%, and the remaining composition is W, weighing soluble rare-earth salt and tungstic acid salt, and respectively preparing 50-100 g / L of rare-earth saline solution and 150-300 g / L of tungstic acid saline solution; adding a minor amount of alkali into the rare-earth salt to control the pH to be 7-8, adding an organic dispersing agent, and stirring to enable the rare-earth salt to form uniformly suspending R(OH)3 colloidal particles (R represents a rare-earth element); adding the tungstic acid saline solution into the R(OH)3 colloidal particles, adding a minor amount of acid to control the pH to be 6-7, adding the organic dispersing agent, stirring to enable the tungstic acid salt to form tungstic acid micro-particles, precipitating and coating the R(OH)3 colloidal particles with the R(OH)3 colloidal particles as a core, and forming coprecipitated coated colloidal particles; conducting spray drying on the coprecipitated coated colloidal particles to obtain a composite precursor powder of tungsten and rare-earth oxide; calcining, conducting thermal reduction via hydrogen, and preparing superfine nanometer tungsten powder having a particle size of 50-500 nm; and conducting normal high-temperature sintering after a general pressing forming. The high-performance fine-grained tungsten material dispersed and strengthened by a minor amount of rare-earth oxide prepared by the above method has a density approximate to full density (>=98.5%), and uniform and small tungsten grains having an average size of 5-10 [mu]m; in addition, rare-earth oxide particles having a particle size of 100 nm - 500 nm are uniformly distributed in a tungsten crystal or a crystal boundary.
Owner:长沙微纳坤宸新材料有限公司

Five-axis two-dimensional ultrasonic polishing machine tool for optical curved face machining and using method thereof

The invention discloses a five-axis two-dimensional ultrasonic polishing machine tool for optical curved face machining. The machine tool is composed of a rack, a three-dimensional moving device, a rotary ultrasonic vibration polishing device, a rotary workbench, a polishing liquid ultrasonic atomizing and applying device and an on-line workpiece detection device. When the machine tool is used, the amplitude of the ultrasonic vibration polishing device is obtained according to the calculation formula (please see the formula in the description); five-axis linkage is achieved through a program control system, and the axis of a polishing head is made to always coincide with the normal line of a workpiece polishing point; a 45-degree included angle is kept between the jetting direction of polishing liquid and the normal line of the polishing point. The polishing machine tool has the advantages that ultrasonic energy transmission is concentrated, the contact stress between the surface of the polishing head and the surface of a workpiece is uniform, the polishing precision is high, the removal rate in the polishing process is high, the utilization rate of the polishing liquid is high, and the polishing precision of the workpiece can be detected on line.
Owner:NORTHEASTERN UNIV

Integrated water purifying and processing equipment

The invention discloses integrated water purifying and processing equipment. The equipment comprises an external barrel and an internal barrel, wherein a convex head is arranged at the top of the external barrel; a water outlet is formed in the center of the convex head; a conical bottom plate is arranged at the bottom of the external barrel; a mixer motor and a speed reducer are arranged in the center of the bottom of the conical bottom plate; the speed reducer is provided with a stirring shaft; the side wall of the conical bottom plate is provided with a dredge pipe; an escape pipe is arranged at the bottom of the conical bottom plate; the inner side of the external barrel is divided into a clean water zone, an inclined tube settling zone, a mud and water separating zone, a secondary cluster flocculation zone, a primary flocculation reaction zone and a mud collection zone in turn from top down; a sludge concentrating zone is arranged between the internal barrel and the external barrel; the equipment is provided with a coagulant quick coagulation device and a sludge hydraulic automatic backflow device to keep the concentration of the sludge in the reaction zone stable; the sludge concentrating zone is provided with a spiral bevel plate to efficiently concentrate the sludge; and the clean water zone is provided with a water collecting plate to realize pressure effluent. The equipment has a simple structure, compact layout and high space utilization rate, is convenient to operate, and is suitable for clarifying tap water in middle-sized and small cities and purifying industrial water by primarily removing turbidity.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Tobacco formula uniformity regulating and controlling method

The invention discloses a tobacco formula uniformity regulating and controlling method. The tobacco formula uniformity regulating and controlling method sequentially comprises the following steps of scanning and detecting raw material tobaccos by using a detection device to obtain detection parameters; dividing values of the detection parameters into a plurality of intervals, wherein the raw material tobaccos with the values of the detection parameters in the same interval are at the same grade; racking the raw material tobaccos at the same grade according to the set weight to obtain tobacco boxes, wherein RFID labels recording corresponding grades are posted on the tobacco boxes,; arranging the tobacco boxes on goods allocations of high racks in a high-bay depot, wherein the tobacco boxes at the same grade are evenly distributed on the different high racks; exporting corresponding tobacco boxes according to a formula process route and conveying the tobacco boxes to a feeding bin so as to perform feeding and cabinet distribution. The industrial and large-scale tobacco formula uniformity regulating and controlling method can basically achieve informatization and automatic control in the whole course, manpower and material resources are saved, and further the tobacco lamina quality uniformity is improved.
Owner:HUAHUAN INT TOBACCO +1

System for calibrating particulate matter measuring instruments and calibrating method of system

The invention belongs to the technical field of dust detection, and discloses a system for calibrating particulate matter measuring instruments and a calibrating method of the system. The system comprises a compressed air processing device, a dust generator and an evenly-mixing box, wherein the compressed air processing device, the dust generator and the evenly-mixing box are sequentially communicated. A dust sample collector and a dust removal device are communicated with the lower portion of the evenly-mixing box. The evenly-mixing box comprises a sedimentation mixing chamber, a mixing section and a sample discharging section. The mixing section comprises a dust feeding pipe, a mixer and an upper transition cavity, an air diluting bin is formed between the dust feeding pipe and the mixer, a plurality of compressed air inlets are evenly formed in the portion, corresponding to the air diluting bin, of the dust feeding pipe in a communicated mode, and mixing through holes for diluting air in a non-directional mode are evenly formed in the pipe wall of the mixer. By means of the system and the calibrating method, the dust generation amount, the dilution air flow, the dust dilution concentration, the sample flow and the evenness of mixing of dust and dilution air are all effectively controlled, and therefore measuring instruments within different dust mass concentration ranges can be calibrated.
Owner:HENAN PROVINCE INST OF METROLOGY

Test bed and method for testing high-frequency mechanical characteristic of tire

The invention relates to a test bed and a method for testing the high-frequency mechanical characteristic of a tire. The test bed comprises a simulation road surface rack assembly composed of a bottom plate, a lower box body, a shaft base and an upper box body, a simulation road surface assembly composed of a high-rigidity drum, a main shaft, a driven belt pulley, a synchronous belt pulley, a speed measuring assembly and road surface protruding blocks, a drive mechanism assembly composed of a motor base, a motor plate, a servo motor, a drive belt pulley and an air blower, a transmission toothed belt, a wheel cover, a tire positioning assembly composed of a positioning support and an installing plate assembly, and a tire inflating and deflating mechanism assembly composed of an air pipe, a tire pressure control valve and an air pump, and the transmission toothed belt and the wheel cover are arranged between the drive belt pulley and the driven belt pulley. The test method comprises the steps that a deflated tire is installed on the positioning support and pressed on the outer surface of the high-rigidity drum, the tire is inflated to be vertically loaded, and the different road surface protruding blocks are installed on the high-rigidity drum to carry out the test and collect data. The test bed and the method are suitable for testing and modeling of the high-frequency mechanical characteristic of the tire.
Owner:JILIN UNIV

Preparation method of liposome entrapping water-soluble medicines

The invention relates to a preparation method of a liposome entrapping water-soluble medicines. According to the invention, a water-soluble medicine is dissolved in amino-acid-structure-containing high-molecular hydrophilic colloids such as gelatin, collagen or albumin; poloxamer is added and the mixture is well mixed, such that a W/W type colloidal solution is formed; the solution is lyophilized; the formed lyophilized powder is transferred into a tert-butanol solution containing a liposome material, and the mixture is well dispersed; and the mixture is subjected to lyophilization, such that high-entrapment-efficiency liposome entrapping the water-soluble medicine is formed. According to the liposome preparation method, W/W type colloid is combined with a two-step lyophilization preparation technology, such that problems such as low water-soluble medicine load, low entrapment efficiency and poor stability of existing preparation methods of liposome entrapping water-soluble medicines are solved. The method provided by the invention is used for preparing liposome used for entrapping water-soluble medicines, and is especially suitable for preparing liposome used for entrapping poor-thermal-stability or macromolecular medicines. The method can also be used for covering medicine bitterness or odor, and for separating medicines from other components.
Owner:ZHEJIANG HISUN PHARMA CO LTD +1
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