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106results about How to "The cost-effective advantage is obvious" patented technology

High-impact polystyrene blend and preparation thereof

InactiveCN101372548AFlame-retardant high-impact polystyrene blend, environmentally friendlyEnvironmentally friendlyAntioxidantMechanical property
The invention relates to a synthetic material, in particular to a halogen-free flame retardant high impact polystyrene blend and a preparation method thereof. The high impact polystyrene blend comprises high impact polystyrene resin with the mass percent of 35-75%, an inorganic flame retardant with the mass percent of 7-45%, an intumescent flame retardant with the mass percent of 5-20%, a flame retardant synergist with the mass percent of 1-5%, a toughening agent with the mass percent of 10-20%, a coupling agent with the mass percent of 0.5-2.0%, a lubricant with the mass percent of 0.5-3.0% and an antioxidant with the mass percent of 0.2-3.0%. The halogen-free flame retardant high impact polystyrene blend is produced by high-speed premixing and extrusion prilling, and has the advantages of environmental protection, flame retardation, low smoke, weather resistance, good thermal stability and mechanical property, easy machine shaping, etc.
Owner:珠海市远康企业有限公司

Preparation and application of paint waste water treatment agents

The invention relates to preparation and an application of paint waste water treatment agents. The paint waste water treatment agents comprise viscosity reducing agent A and flocculants B, wherein the viscosity reducing agent A is aqueous solution, is formed by compounding organic bentonite, 6501 nonionic surface active agents and high-molecular polymers prepared from formaldehyde and three kinds of organic compounds: aniline, urea and starch through reaction, has high electric neutrality and can fast neutralize paint particle charges, so dope loses the viscosity. The flocculants B is aqueous solution, is formed by compounding sodium alginate aqueous solution, sodium lignosulphonate aqueous solution and chitosan modified cation polyacrylamide aqueous solution with the molecular weight being 8 to 12 million, has high coacervation effect and can gather paint particles losing the viscosity. The paint waste water treatment agents have good viscosity reduction and coacervation effects on water-soluble and fat-soluble dope. When the paint flocculants are applied to paint spraying waste water treatment, the agent A and the agent B are sequentially added into paint-containing circulating water, more than 90 percent of paint in the waste water can be cleaned.
Owner:WUHAN UNIV OF TECH

Copolyester melt direct-spinning controllable multiple differential shrinkage composite fiber and preparation method thereof

The invention relates to a copolyester melt direct-spinning controllable multiple differential shrinkage composite fiber and a preparation method thereof. Terephthalic acid and ethylene glycol serve as raw materials, a third component of polyethylene glycol, a fourth component of diethylene glycol and a fifth component of pentaerythritol are added for copolymerization, a copolyester melt is prepared, pressurized through a melt pipeline and a pressurizing pump, conveyed to a spinning box, divided into two ways through two metering pumps, sent into a spinning assembly and a spinneret plate for extrusion and cooled and solidified to form two bundles of yarn, FDY (fully drawn yarn) is obtained after oiling wheel oiling, pre-interlacing, drawing and heat setting of one of the two bundles of yarn, the other bundle of yarn is oiled through an oil spraying nozzle and then led to two yarn guiding disks to obtain POY (polyester pre-oriented yarn), the FDY and the POY are input into a yarn doubling device and a main interlacing device simultaneously for composition, and the composite fiber is obtained after ultra-high-speed winding molding. The composite fiber adopts the better fine three-dimensional multi-layer structure and is large in potential controllable hot-shrinkage rate difference, good in fluffiness, hygroscopicity, air permeability, moisture retention, chromaticity and high color rendering uniformity, multiple in product function and high in additional value.
Owner:SUZHOU UNIV

Method for manufacturing lead-carbon ultracapacitor battery cathode

The invention discloses a method for manufacturing a lead-carbon ultracapacitor battery cathode, comprising the following steps: active substances taking lead powder as a main component and active substances taking active carbon as a main component are respectively coated on different areas of an electrode matrix, and then are dried to obtain the lead-carbon ultracapacitor battery cathode. The invention provides a manufacturing technology of lead-carbon ultracapacitor battery cathode, which takes a pure lead sheet or lead alloy sheet as a matrix, and adopts the active carbon and the lead powder as active substances. Compared with the cathode taking the pure active carbon as cathode active substance, the cathode piece manufactured by the method can greatly improve discharge capacity of thelead-carbon ultracapacitor batteries, the specific energy can reach more than 16wh / kg, the cycle life can reach more than 1500 times, working potential window can reach 2.0V, and the cost is only onethird to one fifth of that of the current inorganic system carbon-carbon symmetric form and nickel electrode-carbon mixed alkaline system.
Owner:SHUANGDENG GRP

Paint mist coagulant

The invention relates to a paint mist coagulant which has excellent adhesion eliminating and coagulating effects on water-soluble and fat-soluble paints and is particularly suitable for treating spraying paint waste water produced in a conventional coating process. The paint mist coagulant comprises an adhesion eliminating agent A and a floating agent B, wherein the adhesion eliminating agent A is a linear high polymer which contains a -NH- group and is generated by reacting an organic nitrogen-containing compound with aldehyde, has very high charge neutralization and can rapidly neutralize paint particle charge to make over 90 percent of paint lose adhesion within 1 to 10 minutes; and the floating agent B is solution which is formed by compounding an amide polymer having the molecular weight of between 9 and 10 million with modified sodium salt, has very strong coagulation and can aggregate paint particles which lose adhesion. When the paint mist coagulant is applied to treating the spraying paint waste water, the pH value of the waste water is adjusted to between 7 and 9 and the agent A and the agent B are added into paint-containing circulating water, so that over 95 percent of paint mist in the waste water is cleared.
Owner:WUHAN UNIV OF TECH

Multifunctional carpentery stuffing and its compounding process

InactiveCN1506427AImproved preload performanceImproved cold bond fastnessMacromolecular adhesive additivesUreaMultiple function
The multifunctional carpentery stuffing consists of component A of one selected from bentonite, attapulgite and kaolin in 45-80 wt%; component B comprising one of wood powder, corn cob powder and stalk powder in 15-40 wt%, densifier in 2-15 wt%, melamine in 0-2 wt%, urea in 0-3 wt%, and acidity regulator in 0-4; and G component sodium salt in 0-3 wt%. The compounding process includes ore dressing, eliminating sand and grinding to obtain component A; mixing component A and component G, grinding, storing, sodium modifying and fine grinding; high speed shearing and mixing all the materials in a high speed rotary no-gravity mixer. The plywood with the said stuffing has less formaldehyde releasing amount, improved waterproof, antiaging, flexibility and other performances and low production cost. The stuffing may be used in replacing available stuffing.
Owner:江苏众诚新材料科技有限公司

Resin-based yawing brake pad for wind-generated generator and preparation method thereof

InactiveCN101956775AMeet the requirements of yaw low speed brakingHigh coefficient of static frictionFriction liningLow speedAluminum silicate
The invention discloses a resin-based yawing brake pad for a wind-generated generator and a preparation method thereof. The resin-based yawing brake pad comprises phenolic resin, nitrile butadiene rubber, organic friction powder, chopped steel fiber, red copper fiber, aramid fiber, aluminum silicate / KFK fiber, graphite, barite and the like. The preparation method comprises the following steps of: weighing various components according to the formula; mixing the components by a plow harrow type blender mixer at high speed; ensuring that each fiber is fully dispersed uniformly; hot pressing forming at the temperature of 160-200DEG C; carrying out heat treatment in a heat treatment tank; cooling to the room temperature along the temperature of the furnace; and finally, machining to obtain the resin-based yawing brake pad. Compared with the general powder metallurgy brake pad, the yawing brake pad has the advantages of proper static friction coefficient, stable friction coefficient, low brake noise, smaller antithesis wear and lower manufacturing cost and can fully meet the yawing low-speed brake of the wind-generated generator.
Owner:HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS +1

Multilane speed measuring and block port triggering method and device based on microwaves

PendingCN106448189ASolve capture and track dynamicallyHigh economic benefit ratioRoad vehicles traffic controlPort triggeringVideo sensors
The invention discloses a multilane speed measuring and block port triggering device based on microwaves. The device comprises a power supply module, an upper computer configuration module, a microwave radar sensor, a signal processing module, a video configuration module, a video sensor and a display storage module. The invention further discloses a multilane speed measuring and block port triggering method based on the microwaves, which comprises the steps that S1, module configuration is performed, and a trigger position is set; S2, the microwave radar sensor scans a detection region; S3, a radar detects target information and performs judgment on an illegal act; S4, the video sensor snapshots; S5, the video sensor performs recognition on license plate, size and vehicle model information; S6, pictorial information of all vehicles is generated; and S7, platform storage and illegal act evidence collecting are performed. The method and the device disclosed by the invention ensure that one microwave radar sensor can cover multiple lanes, and each lane is equipped with video sensor coverage, thereby being high in economic benefit, and suitable for application and popularization.
Owner:NANJING HURYS INTELLIGENT TECH CO LTD

Nano zirconium carbide induction type heat-storage heat-preservation polyester fiber and preparation method thereof

InactiveCN103132177AAdjust and control the effect of induction thermal storage insulationEasy to carryFilament forming substance formingArtificial thread manufacturing machinesFiberPolyester
The invention relates to a nano zirconium carbide induction heat-storage heat-preservation polyester fiber and a preparation method thereof. The preparation method comprises the steps of: adding 1.0-8.0% of nano zirconium carbide using as an additive in an online manner to evenly blend and fuse together with a polyester chip in a screw rod, extruding blend melt from a spinneret micro-hole, winding the extruded blend melt at the winding speed of 3000-3200m / min to prepare a POY (polyester pre-oriented yarn) silk tube by using the processes of cooling, curing, oiling and bundling by a nozzle, stretching to deform after balancing, so as to prepare the nano zirconium carbide induction heat-storage heat-preservation polyester fiber. The nano zirconium carbide induction heat-storage heat-preservation polyester fiber has the functions of efficiently and selectively absorbing visible light and a near infrared ray in a solar radiation ray, and reflecting the heat radiation of a human body, so as to have the functions of two-way temperature induction adjustment and heat preservation, changes the heat-storage mode of cold protective clothing, and has the characteristics of being high in additional value, good in quality and significant in cost performance.
Owner:SUZHOU UNIV

Bottom layer brushing gypsum and application thereof

The invention discloses a bottom layer brushing gypsum, which is prepared by mixing the following components in parts by weight: 200-500 parts of building gypsum, 485-785 parts of quartz sand, 3 parts of regulator, 5 parts of inorganic gel, 0.2-0.5 part of retarder and 2 parts of anti-cracking agent, wherein the quartz sand is one or the mixture of more than two of the quartz sands of 30 meshes, 40 meshes and 60 meshes in any proportion, the regulator is hydroxypropyl methyl cellulose, the inorganic gel is sodium bentonite, the retarder is a special retarder for polyphosphate gypsum, and the anti-cracking agent is lignocellulose; and the building gypsum is prepared by desulfurized gypsum according to the following method that the desulfurized gypsum enters a boiling calcinator after being pre-dried at the temperature of 80-90 DEG C, is calcined at the temperature of 120-130 DEG C, then is added into an impact type flour mill to be ground, and is prepared into the building gypsum after being cooled and aged. The invention has strong adhesive force, effectively inhibits the phenomenon of shrinkage cracking in plastering, and has good water resistance.
Owner:上海每天节能环保科技股份有限公司

Controllable multiple-differential-shrinkage composition fiber made from copolyester melt through ultra-fast direct spinning, and preparation method of composition fiber

The invention relates to a controllable multiple-differential-shrinkage composition fiber made from a copolyester melt through ultra-fast direct spinning, and a preparation method of the composition fiber. The copolyester melt, which is made from five components including terephthalic acid, ethylene glycol, poly ethylene glycol, diethylene glycol and pentaerythritol, is pressurized by a booster pump and transported through a melt pipeline into a spinning box body, and is then divided by two measuring pumps into two branches, which enter a spinning component and a spinneret respectively and finally be extruded. After cooling and curing, two yarns are formed, wherein one yarn is subject to oiling by an oil wheel, pre-entwining, stretching and thermoforming to obtain an FDY yarn, and the other yarn is subject to oiling by an oil nozzle, and is guided to two spinning discs to obtain a POY yarn; the two yarns are simultaneously input into a doubling device and a main entwining device for combination, and are formed through the ultra-fast rolling, so as to obtain the composition fiber. The composition fiber has the characteristics of relatively good micro three-dimensional morphological structure, moisture absorption property, moisture preservation property, air permeability and antistatic property, easiness in dyeing, uniform dyeing, high coloration uniformity and the like; the composition fiber is high in processing speed, high in yield, low in consumption, low in manufacturing cost, high in value added, high in product functions, good in quality, and obvious in advantage of performance price ratio.
Owner:SUZHOU UNIV

Preparation method for porous tungsten bulk material with uniform and controllable pores

The invention discloses a preparation method for a porous tungsten bulk material with uniform and controllable pores. The preparation method is characterized by comprising the following steps of: by taking tungsten powder as a raw material, obtaining spherical tungsten powder through plasma balling treatment and electric vibrating and screening treatment; and then, obtaining the porous tungsten bulk material by discharge plasma sintering. According to the preparation method, the porous tungsten bulk material with uniform and controllable pores is obtained by combining a plasma balling technology, an electric vibrating and screening technology and a discharge plasma sintering technology; the preparation method is simple and liable to realize; the control on pores of the product can be realized by regulating the process parameters, so that the porous tungsten bulk material with porosity of 17%-22.5% and pore size of 2-5 mum; the prepared porous tungsten bulk material can be used for remarkably improving the infiltration performance of the material, so that the launch stability of a barium-tungsten cathode is greatly improved, and the service life of the barium-tungsten cathode is prolonged.
Owner:HEFEI UNIV OF TECH

Core-shell structure positive electrode material and preparation method thereof

The invention provides a high-performance core-shell structure positive electrode material and a preparation method thereof. The preparation method comprises the following specific steps: (1) preparing a mixed solution A and a mixed solution B of nickel, cobalt and manganese salts with different molar components, and independently preparing a salt solution containing an X element; (2) respectively and simultaneously adding the solution A, an alkali solution and a complexing agent solution into a reaction kettle, and carrying out coprecipitation reaction to obtain an inner core; (3) adding the X salt solution and a precipitator solution to obtain an inner core with a coating layer; (4) adding the solution B, the alkali solution and the complexing agent solution into the base solution of the inner core with the coating layer to obtain a core-shell precursor with an interlayer; and (5) roasting to obtain the core-shell positive electrode material. According to the core-shell positive electrode material disclosed by the invention, due to the existence of the interlayer, a gap generated due to different volume changes of the inner core and the outer shell can be overcome, so that the connection force between the outer shell and the inner core is enhanced, and compared with a common core-shell positive electrode material, the core-shell positive electrode material has relatively excellent thermal stability and relatively long cycle performance.
Owner:TIANJIN B&M SCI & TECH

Environment-friendly and flame retarded rubber material of inside liner of fire hose and preparation method thereof

The invention discloses an environment-friendly and flame retarded rubber material of an inside liner of a fire hose and a preparation method thereof. The rubber material is prepared from the following raw materials in parts by weight: 100 parts of chlorinated polyethylene rubber, 10-15 parts of magnesium oxide, 0-8 parts of zinc oxide, 2-10 parts of thermal stabilizer, 15-20 parts of carbon black, 15-30 parts of white carbon black, 10-20 parts of citric acid plasticizer, 60-100 parts of aluminium hydroxide, 2-8 parts of adhesive, 2-5 parts of vulcanizing agent and 1.5-3 parts of co-vulcanizing agent. The method comprises the following steps of: placing the chlorinated polyethylene rubber, the thermal stabilizer, the magnesium oxide, the zinc oxide, the carbon black, the white carbon black, the aluminium hydroxide, the adhesive and the citric acid plasticizer into an internal mixer, mixing for 120-240 s, then adding the vulcanizing agent and the co-vulcanizing agent to continuously mix for 30-60 s, complementally mixing for 200-400 s on an open mill after discharging, and then pressing into sheet rubber suitable for processing on a tablet press.
Owner:WEIFANG YAXING GRP CO LTD

Method for producing liquid wood integral door

The invention discloses a method for producing a liquid wood integral door, which comprises the following steps of: 1) preparing liquid wood, namely (1) drying and grinding raw materials; (2) mixing the raw materials to obtain a mixture; and (3) generating the liquid wood, wherein the liquid wood comprises the following raw materials in part by weight: 100 parts of polyvinyl chloride, 40 parts of calcium carbonate, 60 parts of wood fiber powder, 4.5 parts of stabilizer, 8 parts of chlorinated polyethylene (CPE), 5 parts of acrylamide (ACR), 3 parts of H530, 0.5 part of polyethylene (PE) wax, 0.6 part of stearic acid, and 1 part of pigment; and 2) performing extrusion molding on the liquid wood at one time to obtain the integral door. In the method, the raw materials are molded at one time at a high temperature and under high pressure, do not contain formaldehyde, and are subjected to surface treatment by adopting thermal transfer technology; the integral door is free of paint, has no any toxic harmful gas and smell release in the production and use process, is environmental-friendly and has practicality.
Owner:杨华

Four-quadrant-detector-based linear optical current sensor and detection method thereof

The invention relates to a four-quadrant-detector-based linear optical current sensor and a detection method thereof. The linear optical current sensor comprises a laser source, a polarizer, a magneto-optical film, a beam expander, a radial polarization detection grating, a four-quadrant detector and a signal processing system that are arranged successively at one same optical path. In addition, the linear optical current sensor also includes a magnetic collection ring with air gaps; a to-be-detected current-carrying lead passes through the magnetic collection ring; and a magneto-optic thin film is arranged between the air gaps. In addition, the detection method includes: an optical signal passes through the polarizer, the magneto-optical film, the beam expander, and the radial polarization detection grating successively from the laser source and then a light spot is obtained; after the light spot passes through the four-quadrant detector, the optical signal is transformed into an electrical signal; the signal processing system collects the electrical signal and operation is carried out to obtain the size of a rotation angle, so that a to-be-detected current value in the to-be-detected current-carrying lead is obtained. Compared with the prior using the CCD camera, the sensor and the detection method enable the resolution ratio to be improved substantially, the accuracy to be enhanced, and the cost to be reduced.
Owner:FUZHOU UNIV

Solar steam direct power generation system with heat storage function

ActiveCN105756873AReduce investmentRealize uninterrupted continuous power generation day and nightSolar heating energyFrom solar energyMolten saltEngineering
The invention discloses a solar steam direct power generation system with a heat storage function. The solar steam direct power generation system comprises a heat collection subsystem, a heat storage subsystem and a power generation subsystem. Under irradiation conditions in the daytime, high-temperature and high-pressure saturated steam enters the inner pipe side of a sleeve type line focusing solar heat collector, and low-temperature molten salt enters the sleeve side. Focusing solar energy firstly heats the molten salt, and the steam is heated to an overheated state after the temperature rise of the molten salt. Part of the overheated steam enters a high-pressure storage tank for heat storage, and the rest of overheated steam enters the power generation subsystem for power generation. Meanwhile, the molten salt enters a high-temperature molten salt tank for heat storage. Under irradiation-free conditions in the nighttime, the molten salt in the high-temperature molten salt tank enters a low-temperature molten salt tank after heat release by an overheater; the high-pressure saturated steam flows out from the high-pressure storage tank and is heated by the overheater to form overheated steam to enter the power generation subsystem for power generation. The solar steam direct power generation system disclosed by the invention realizes the all-weather power generation by adopting a solar steam direct power generation technology through taking water / steam as not only a working medium but also a main heat storage medium and as an auxiliary heat storage medium with coordinate application of the small amount of molten salt.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI

Environment-friendly flocculant for treating tap water

An environment-friendly flocculant for treating tap water The flocculant is characterized by using poly aluminium trichloride solution, natural polymer polysaccharide solution and auxiliary agent A solution in a coordinated way, wherein the poly aluminium trichloride solution has mass percent of 0.1-1%; the natural polymer polysaccharide solution is dilute acid solution with mass content of 0.2-2%; the auxiliary agent A solution is compound solution of sodium hydroxide, sodium bicarbonate, aluminum chloride, montmorillonite and water; and the montmorillonite accounts for 5% of the total mass of the compound solution. The best volume ratio of poly aluminium trichloride solution to natural polymer polysaccharide solution to auxiliary agent A solution used by the flocculant is equal to 0.5-5:3-10:5-10. The flocculant has large flocculation particles and high sedimentation velocity and has removal rate of raw water turbidity up to 98.09%. The raw water turbidity can be within 3NTU, the national standard, through one-time treatment when the raw water turbidity is between 70NTU and 100NTU. The content of aluminum ions in the effluent is 57.5% less than the content of aluminum ions in the traditional flocculants, the medicines for treating the tap water are little, and the flocculant does not contain the components harming the human bodies and has excellent performance and stable quality.
Owner:WUHAN UNIV OF TECH

Polyester used for plates and preparing method thereof

The invention discloses polyester used for plates and a preparing method thereof. Raw materials of the polyester comprise, based on the theoretical weight of the polyester, terephthalic acid, ethylene glycol, 5-20 wt% of a dicarboxylic acid except the terephthalic acid, 1-5 wt% of diol, 0.002-0.006 wt% of a polyol compound, 0.01-0.1 wt% of a hydrophilic modification agent and 0.01-0.03 wt% of a heterogeneous inorganic substance. The polyester is used for extrusion molding of the plates. After molding, the plates have good post processing performance such as subsequent plastic vacuum forming, is advantaged by moisture resistance, static electricity resistance, high transparency, high impact strength, high heat deflection temperature, and the like, and can partially replace ABS for wide applications in cases, hand plate manufacturing, electronic and electric products, and other fields.
Owner:CHINA PETROLEUM & CHEM CORP +1

Chemically-modified asphalt cement and preparation method thereof

The invention discloses chemically-modified asphalt cement which is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 0.8-1.8 parts of an RET asphalt modifier and 0.2-0.4 part of polyphosphoric acid. In addition, the invention further discloses a preparation method of the chemically-modified asphalt cement. The method comprises the following steps: heating the matrix asphalt to 175-185 DEG C, then adding the RET asphalt modifier into the matrix asphalt, uniformly stirring, finally adding the polyphosphoric acid, and continuously stirring uniformly so as to obtain the chemically-modified asphalt cement. The chemically-modified asphalt cement disclosed by the invention is simple in production process, relatively low in production cost and good in thermal storage stability.
Owner:CHANGAN UNIV

Method for removing micropollutants in water by activating peroxysulphate through iron electrode

The invention provides a method for removing micropollutants in water by activating peroxysulphate through an iron electrode. The method specifically comprises the following steps that the peroxysulphate is put into the water containing the micropollutants, power-on electrolysis is performed on the water containing the micropollutants by taking the iron electrode as an electrode, even stirring is performed, and then removal of the micropollutants is completed, wherein the mole ratio of the put quantity of the peroxysulphate to the micropollutants is 1:1-50:1. The method is high in reacting speed and easy to operate and has the obvious cost performance advantage; ferrous ions are reduced and regenerated in a cathode zone of the electrode, on one hand, it is guaranteed that reacting can be quickly and continuously performed, and on the other hand, too many flocculent precipitates are prevented from being generated while a certain flocculation effect is guaranteed.
Owner:HUNAN UNIV

Porous superfine denier polyester pre-oriented yarn and preparation method thereof

The invention relates to a porous superfine denier polyester pre-oriented yarn and a preparation method of the porous superfine denier polyester pre-oriented yarn. Terephthalic acid and ethylene glycol are adopted to be used as raw materials of polyester, and the existing production equipment of pre-oriented yarn (POY) is adopted. The main technological parameter of the porous superfine denier polyester pre-oriented yarn is: the diameter of spinneret plate microporous is 0.10-0.15 millimeter, the height of a slow cooling area is 80-150 millimeters, and the slow cooling area is combined with ring windchill; two nozzle oiling systems and reasonable winding tension and speed are adopted, the porous superfine denier polyester pre-oriented yarn which is 44-55 dtex / 192f is obtained, and the filament number of the porous superfine denier polyester pre-oriented yarn is 0.23-0.29 dtex. The porous superfine denier polyester pre-oriented yarn has the advantages of being plural in pore number, small in filament number, low in absolute intensity, small in bending rigidity, large in specific surface area and voidage, soft, light in weight and the like. Moreover, the porous superfine denier polyester pre-oriented yarn further has the advantages that filament aggregation has a good capillary core absorption effect and a better ventilation wet guiding function, added value is high, quality is good, production cost is low, the advantage of cost performance is obvious and application prospect is broad.
Owner:ZHONGRUN SCI & TECH

Reverse-polarity AlGaInP light-emitting diode structure with window layer being covered with indium tin oxide

The invention provides a reverse-polarity AlGaInP light-emitting diode structure with a window layer being covered with an indium tin oxide (ITO). The structure sequentially comprises, from the bottom up, a p electrode, a substrate, a bonding layer, a reflector layer, an insulating layer, a current extension layer, a p-type semiconductor layer, an active region, an n-type semiconductor layer, an n-type semiconductor contact layer, the window layer, an indium tin oxide layer and an n electrode, wherein the indium tin oxide layer is covered on the window layer and runs through the window layer having openings in a cylinder form and is directly contacted with the n-type semiconductor contact layer. The structure can improve light extraction efficiency and current expansion efficiency of an LED chip and is easy to combine with the existing process.
Owner:SHANDONG INSPUR HUAGUANG OPTOELECTRONICS

Compound tap water flocculating agent of environment-friendly chitosan quaternary ammonium salt and aluminum polychloride

The invention relates to a compound tap water flocculating agent of environment-friendly chitosan quaternary ammonium salt and aluminum polychloride. The compound tap water flocculating agent is characterized by being composed of an environment-friendly chitosan quaternary ammonium salt solution and an aluminum polychloride solution. The compound tap water flocculating agent is prepared through the following steps: dissolving the chitosan quaternary ammonium salt to prepare the chitosan quaternary ammonium salt solution, adding glutaraldehyde to the chitosan quaternary ammonium salt solution while stirring, wherein the 1-4mol of glutaraldehyde is added into each liter of chitosan quaternary ammonium salt solution, and then reacting for 2-4h at a low temperature of 50-60 DEG C, and finally, slowly and dropwise adding the aluminum polychloride solution to the chitosan quaternary ammonium salt solution in the volume ratio of 1: (1-4), and finally, curing to obtain the compound tap water flocculating agent. The compound tap water flocculating agent of the environment-friendly chitosan quaternary ammonium salt and the aluminum polychloride is large in flocculated particles and high in settling speed; the removal rate of the compound tap water flocculating agent on the turbidity of raw water is 99.34%, which is slightly higher than a traditional flocculating agent; besides, the raw water having the turbidity in the range of 70-100NTU is treated once so that the turbidity can be up to the national standards and within 1NTU.
Owner:WUHAN UNIV OF TECH

Polyamide 6 POY/FDY composite fibre and preparation method for same

The invention relates to a polyamide 6 POY / FDY composite fibre and a preparation method for the same. According to the preparation method, polyamide 6 dry slices are input in a screw rod, heated, melted and filtered, and then enter a spinning manifold, a spinning melt is extruded from two metering pumps, a spinning assembly and the micropores of two spinneret plate, cooled by the blowing of a quenching ring and cured to form two bundles of yarns, and one bundle of the yarns is subjected to nozzle oiling, pre-networking, secondary nozzle oiling, and stretching and heat-setting between a first stretching roll group and a second stretching roll group to obtain polyamide 6 FDY; the other bundle of the yarns is subjected to nozzle oiling, a first yarn guide disc and a second yarn guide disc to obtain polyamide 6 POY; the polyamide 6 FDY and the polyamide 6 POY are input in a central networking device and a third yarn guide disc simultaneously, and subjected to compounding through nozzles and ultra-high-speed winding forming to prepare the polyamide 6 POY / FDY composite fibre. According to the polyamide 6 POY / FDY composite fibre and the preparation method disclosed by the invention, a pneumatic spinning quenching technology is used, thus increasing the spinning speed; the features of fast production speed, high yield, low cost, energy conservation and emission reduction, good product quality and the like are achieved.
Owner:SUZHOU UNIV

Multifunctional slotted disc type liquid phase distributor

The invention relates to a multifunctional slotted disc type liquid phase distributor which is formed by a supporting bottom disc, and is characterized in that the supporting bottom disc is fixedly connected with at least one paratactic rising air cylinder, the inner wall of which is provided with at least one drip tube, the lower part of the drip tube is provided with a drip hole, and the upper part thereof is provided with an overflow hole; a V-shaped liquid collecting plate having the same direction as the rising air cylinder is respectively arranged above the rising air cylinder. The distributor has three functions of liquid collection, liquid separation and gas separation and the like, and has the advantages of simple and compact structure, small volume, light weight, low manufacturing cost and high cost performance; the parameter adjustment range of all parts is large, and the operational flexibility ratio is within the range of 25-120%; the V-shaped liquid collecting plate can be used for catching droplet entrainment in the gas, so that the working efficiency is high; the distributing points are more, gas-liquid distribution is uniform, the gas resistance is small, and the drip hole and filler are not easy to pollute and block up, thus the liquid phase distributor is applicable to the production occasions which easily have entrainment and are easy to block up; in addition, the liquid phase distributor is convenient for installation and wide in application scope. After being popularized and applied, the liquid phase distributor has remarkable economical and social benefits.
Owner:SHALIN METALLIC PRODS JILIN CITY

Environment-friendly magnesium-ion modified montmorillonite tap water flocculant and application thereof

The invention discloses an environment-friendly magnesium-ion modified montmorillonite tap water flocculant. The flocculant is prepared by a chitosan liquid and a magnesium-ion modified montmorillonite liquid; the chitosan liquid is an acetic acid liquid containing 0.2-2 mass percent of chitosan, and the magnesium-ion modified montmorillonite liquid is prepared by the mixing of sodium hydroxide, sodium bicarbonate, magnesium chloride, montmorillonite and water according to the mass ratio of 1:1:(1-4):(5-8):(86-92). The flocculant of the invention has large flocculation particles and fast sedimentation rate, the removal rate of raw water turbidity reaches 98.09 percent, and for the raw water with the turbidity of 70-100 NTU, the once treatment can be within 3 NTU of the national standards; and the cost is low, and the flocculant has no ingredients harmful to human bodies, and has excellent performance and stable quality.
Owner:WUHAN UNIV OF TECH

Health-care tea capable of assisting diabetes treatment and preparation method thereof

The invention relates to health-care tea capable of assisting diabetes treatment and regulating blood sugar. The health-care tea is characterized by comprising common anemarrhena rhizome, broadleaf holly leaf, cornel, kudzu root, mulberry leaf, yam, pseudostellaria root and cinnamon, wherein the common anemarrhena rhizome, the broadleaf holly leaf and the cornel are monarch drugs; the kudzu root, the yam and the pseudostellaria root are ministerial drugs; and the cinnamon is an adjuvant drug. The health-care tea is novel health-care food for diabetes treatment, can improve disequilibrium of all nutrients in a human body and eliminate adverse reaction when people drink the tea for a long period of time, is free of preservative, is a pure natural green beverage and a preferable tea bag, is suitable for people with slightly higher blood sugar, has favorable effects in balancing, regulating and stabilizing blood sugar, is nutritive health-care food for sub-health people for preventing diabetes and has very remarkable market potential, broad market and favorable development potential. The invention also provides a preparation method of the health-care tea, comprising the process steps of: performing crushing, decocting, decompressing, drying and the like on all components to prepare particles.
Owner:BIHENG BIXIN BEIJING INVESTEMENT MANAGEMENT

Co-polyester melt and method for preparing same

The invention relates to a co-polyester melt and a method for preparing the co-polyester melt. Terephthalic acid and ethylene glycol are adopted as raw materials and a certain mass fraction of the third component of component polyethylene glycol, a certain mass fraction of the fourth component of diethylene glycol and a certain mass fraction of the fifth component of pentaerythritol are added to the raw materials to be copolymerized, and accordingly the co-polyester melt of the five-component monomers is obtained. The co-polyester melt has the advantages of being low in production cost, multifunctional, efficient and good in quality, and a fiber made from the co-polyester melt has the advantages of being easy to dye and level in dying, absorbing moisture, conducting moisture, being good in moisture retention and resistant to static electricity and the like.
Owner:SUZHOU UNIV

Plasma thermal spraying device

The invention discloses a plasma thermal spraying device which is used for spraying tungsten-copper mixed powder to a red copper substrate. The plasma thermal spraying device comprises a spray gun, a powder feeder, an air flow meter, an air controller and an air supply system, wherein the spray gun is connected with the powder feeder, the air controller is used for controlling air filtration, the air controller is connected with the air flow meter, the air supply system is connected with the air flow meter, and the air flow meter is connected with the spray gun; the powder feeder is used for providing the tungsten-copper mixed powder, the tungsten-copper mixed powder is spherical powder grains with the grain size ranging from 2 micrometers to 15 micrometers, the spherical powder grains comprise tungsten grains and a copper layer which covers the tungsten grains, the tungsten grains are nano-scale grains, and the copper layer is a micron-scale layer; and the distance from the spray gun to the red copper substrate ranges from 8 mm to 12 mm. The plasma thermal spraying device is simple in structure, convenient to operate and low in cost, thermal conductivity of a tungsten-copper flange cooling fin made through the device reaches up to 380 W / m*K, and the cooling fin is stable and reliable.
Owner:FOSHAN SENHE YEFENG PAPER PROD CO LTD
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