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Cellulose/sliver/silver chloride composite material and preparation method thereof
The invention provides a cellulose / silver chloride composite material and a preparation method thereof. The cellulose / silver chloride composite material is quickly prepared by adopting microcrystalline cellulose, sliver salt and chlorine compound as the materials, adopting water as solvent and adopting an ultrasonic-wave treatment method. The cellulose / silver chloride composite material prepared by the preparation method disclosed by the invention is uniform in silver / silver chloride nanometer particle, capable of being uniformly distributed on a cellulose substrate and is extensive in application prospect in the antibacterial filed and the photocatalysis filed. Moreover, according to the preparation method disclosed by the invention, the materials are cheap, the process is simple, the operation is convenient, the preparation is quick and the process conditions are easy to control, so that the production process is greatly simplified, the time is saved and the cost is reduced. Meanwhile, the preparation method is free of any expensive and complex equipment and is beneficial to the industrial popularization.
Owner:BEIJING FORESTRY UNIVERSITY
Gas particle concentration measurement method and device on basis of broadband linear frequency modulation ultrasound
InactiveCN102879309AHigh measurement accuracyLow costParticle suspension analysisPhysicsMeasurement device
Owner:SOUTH CHINA UNIV OF TECH
Unsaturated polyester modified polyurethane coating varnish
The invention provides unsaturated polyester modified polyurethane top coat paint which consists of a main agent of the top-coat paint, a firming agent, an evocating agent and a diluent. In the main agent of the top-coat paint, an unsaturated polyester resin with a weight of 35.0 to 40.0 percent of the gross weight of the main agent of the top-coat paint and acrylic resin with a weight of 40.0 to 45.0 percent of the gross weight of the main agent of the top-coat paint are included. The unsaturated polyester modified polyurethane top-coat paint can effectively solve the problems of construction complexity and compatibility; besides, the product has the advantages of good abundance, easy polishing, high rigidity and being very suitable for the coating production of a musical instrument. The surface of the coated product has the characteristics of high rigidity, good abundance, and high adhesive attraction, being hard to generate air bubbles and pinholes as well as uneasy cracking. Besides, compared with the construction mode of mixing polyurethane paint and unsaturated polyester paint used in the current market, the unsaturated polyester modified polyurethane top-coat paint has simpler construction performances and appearance effect of a coated film.
Owner:上海展辰涂料有限公司 +2
Function for control and management vehicle and/or portable electronic apparatus of data
Owner:ASULAB SA
Filter device
There is provided a low-loss and wide-band filter device capable of obtaining a sufficient attenuation amount. In a communication system including a first band pass filter having a relatively low pass band or a second band pass filter having a relatively high pass band, the filter device (1) is used as the first band pass filter. In the filter device (1), series arm oscillators (S21 to S23) are inserted into a series arm connecting an input terminal (2) and an output terminal (3). Parallel arm oscillators (P21, P22) are connected to a parallel arm connecting the series arm and the reference potential. At least one of the parallel oscillators (P21, P22) is connected in series to inductances (L1, L2). The resonance frequency of sub-resonance generated by insertion of the inductances (L1, L2) is positioned in the pass band, or in its vicinity, of the band filter of the reception side or the transmission side of the partner filter with respect to the ladder type filter.
Owner:MURATA MFG CO LTD
Automobile engine valve blank cross wedge rolling accurate forming method
InactiveCN101786132AIncrease productivityEasy generationRollsMetal rolling arrangementsProduction rateKnuckle
The invention relates to an automobile engine valve blank cross wedge rolling accurate forming method, which comprises the following processes that: a roller with two wedge-shaped molds is arranged on a cross wedge rolling machine; then a round metal rod material is heated to 1100 to 1180 DEG C; finally, the round metal rod material is arranged on a caliber between an upper mold and a lower mold through an axial feed device, the roller with the sedge-shaped molds rotates in the same direction; and the heated round metal rod material carries out the rotary motion under the action of the side wall and the top surface of a mold wedge, continues the deformation of radial compression and axial extension, and is cut in the middle thereof to gain a pair of automobile engine valve blanks; the forming angle Alpha of the wedge-shaped mold is 23-30 degrees, the widening angle Beta thereof is 5-8 degrees, and the knuckle R thereof is 5-15mm; and compared with the traditional electrical upsetting process, the invention has the advantages that the cost is reduced, the production rate is improved, and the remarkable economic benefit is brought.
Owner:UNIV OF SCI & TECH BEIJING
Carbon nano-tube with fluorine-containing surface and preparation method thereof
ActiveCN102730664AImprove heat resistanceEasy generationMaterial nanotechnologyCarbon fluoridesReaction temperatureStrong acids
The invention discloses a carbon nano-tube with a fluorine-containing surface, wherein the surface of the carbon nano-tube is of a carbon-fluorine covalent bond structure, the content of fluorine in the surface is 4-14%, and the decrease rate of the content of the fluorine is smaller than 5% after a produced fluorocarbon nano-tube is treated for 1 hour under a vacuum condition at 350 DEG C. The preparation method of the carbon nano-tube comprises the following steps of: firstly treating the carbon nano-tube by utilizing strong acid, secondly placing the carbon nano-tube in a vacuum reactor, charging fluorine / inert gas mixture with fluorine partial pressure of 10-100KPa in nitrogen atmosphere under room temperature to react for 0.5-4 hours at 150-300 DEG C, and cooling down to be the room temperature to obtain the carbon nano-tube. The fluorocarbon nano-tube prepared by the preparation method disclosed by the invention has the advantages of high fluorine content, low reaction temperature, high safety, energy conservation, and simple process, a fluorine-containing group of the surface of the treated prepared fluorocarbon nano-tube has good heat resistance and lower cost, and the fluorocarbon nano-tube is suitable for large-batch production and has stronger application prospect.
Owner:SICHUAN UNIV
Ultralow sidelobe synthetic aperture radar imaging method based on complete complementary sequence
InactiveCN102608602ARadar signal waveform is easyEasy generationRadio wave reradiation/reflectionImaging qualityImage quality
The invention discloses an ultralow sidelobe synthetic aperture radar imaging method based on a complete complementary sequence. The ultralow sidelobe synthetic aperture radar imaging method includes steps of 1, dividing echo data based on signal waveforms of the complete complementary sequence into echo data which are obtained by means of utilizing two complementary sequences as radar transmitting signals independently; 2, compressing range pulses based on matched filtering; 3, performing azimuth Fourier transformation; 4, correcting range migratory motion; 5, performing azimuth data high-frequency zero fill; 6, shifting and adding the data after zero rill; and 7, performing azimuth compressing to obtain a final image. The ultralow sidelobe synthetic aperture radar imaging method has theadvantages that radar signal waveforms are easy to be generated, pulse compressing is easy to be realized, azimuth ultralow sidelobe is realized, and azimuth resolution and image quality are high.
Owner:BEIHANG UNIV
Nickel-saving type double-phase stainless steel and preparation process thereof
ActiveCN103014559AEasy to produceImprove high temperature plasticityHigh carbonIntermediate frequency
The invention relates to a preparation process of nickel-saving type double-phase stainless steel, comprising the following steps of: 1) controlling components of a mother solution in an electric furnace as follows: more than 1.0% of C, less than 1.0% of Si, 12-21% of Cr, 1.5-1.9% of Ni and less than 0.025% of P, controlling a tapping temperature at 1580-1630 DEG C, and mixing the mother solution in the electric furnace with a high-carbon ferro-chrome mother solution in an intermediate-frequency furnace to form a mixed mother solution, wherein the high-carbon ferro-chrome mother solution contains the following components of 6-10% of C, less than 0.5% of Si, less than 0.06% of P, 62-72% of Cr and the balance of iron; and 2) blending the mixed mother solution into an AOD (Argon Oxygen Decarburization) furnace to carry out oxygen blowing and decarburization, nitrogen blowing and component adjustment, refining in a steel ladle refining furnace and adding a micro-alloy into the components, and finally adjusting, wherein the adjusted chrome-nickel equivalence ratio is more than or equal to 2.2. The chrome-nickel equivalence ratio is properly controlled to be good for forming double-phase stainless steel high-temperature ferrite so that heat machining is carried out in a single-phase region to the greatest extent; and furthermore, the preparation process is good for the high-temperature plasticity of the double-phase stainless steel.
Owner:ZHENSHI GROUP EASTERN SPECIAL STEEL
Fluorinated acrylate copolymer pervaporation composite film and preparation method thereof
ActiveCN103341328AImprove adhesionGood chemical stabilitySemi-permeable membranesComposite filmHeat resistance
The invention discloses a fluorinated acrylate copolymer pervaporation composite film which comprises a supporting layer and an active separating layer, wherein the active separating layer is uniformly distributed on the supporting layer which is a polytetrafluoroethylene microporous supporting film. The active separating layer is a fluorinated acrylate copolymer. The surface composition and body structure of the fluorinated acrylate copolymer pervaporation composite film are controllable, and the fluorinated acrylate copolymer pervaporation composite film has better stability, heat resistance, corrosive resistance, and long service life. The invention further discloses a preparation method of the fluorinated acrylate copolymer pervaporation composite film. The preparation method has the advantage of effectively solving the problem of non-uniformity and crack in the film coating process, and the preparation method is simple and low in cost, and easy to realize industrialized production.
Owner:GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
Method for preparing trehalose crystals
ActiveCN102924539ALow viscosityIncrease the speed of diffusionSugar derivativesDisaccharidesTrehaloseVacuum evaporation
The invention relates to a method for preparing trehalose crystals. A trehalose aqueous solution is subjected to vacuum evaporation and concentration, trehalose seed crystals are added, the temperature is controlled, simultaneously an elution agent is added in a flowing mode to enable the supersaturation degree of the solution to be maintained in a low level, and the temperature is reduced gradually to achieve crystallization. The trehalose crystals are produced by means of an elution-cooling coupling crystallization method, and the crystallization yield of trehalose is improved. Fine crystals are prevented from being produced in the crystallization process, and obtained products are even in fineness distribution and high in purity. Compared with traditional coupling crystallization, a crystallization period is shortened, the crystallization yield is improved, and convenience is further provided for follow-up centrifugal separation. The novel method for preparing the trehalose crystals has large application potential in the field of functional sugar crystallization production.
Owner:NANJING UNIV OF TECH
Water-based organic ceramic sprayed aluminum veneer and manufacturing technology thereof
The invention relates to a water-based organic ceramic sprayed aluminum veneer and a manufacturing method thereof, and belongs to the technical field of curtain wall decorative boards. The water-based organic ceramic sprayed aluminum veneer comprises a passivation layer I, an aluminum baseplate, a passivation layer II, a bottom paint layer and a surface paint layer in sequence from top to bottom, wherein the bottom surface and the surface of the aluminum baseplate are conducted by passivation processing to obtain the passivation layer I and the passivation layer II respectively; the bottom paint layer is formed by spraying a water-based organic ceramic material for 15-20 <Mu>m on the passivation layer II; the surface paint layer is formed by spraying the water-based organic ceramic material for 20-30 Mum on the bottom paint layer. The sprayed aluminum veneer has the advantages that the aluminum veneer is controllable in range of glossiness, high in intensity and hardness, scratch resistant, acidproof, highly flame-retardant, and aging-resistant, provided with self-cleaning performance, and large in color choosing space.
Owner:ZHEJIANG WONDERFUL WALL BUILDING MATERIALS
Method for repairing and constructing thin overlay of cement concrete road pavement
InactiveCN102619157AHigh bonding strengthIncrease bonding areaRoads maintainenceStructural engineeringRoad surface
The invention discloses a method for repairing and constructing a thin overlay of a cement concrete road pavement. The method comprises the following steps: 1) mechanically cutting parallel V-shaped grooves on a used cement concrete pavement; 2) cleaning dirt reserved on the surface of the pavement and positions to be dropped after the V-shaped grooves are cut mechanically; 3) coating or spraying a pre-coating agent on the used cement concrete pavement processed by the step 1) and the step 2) so as to form a pre-coating layer; 4) drying the surface of the pre-coating layer, and then coating a mortar binding agent on the surface of the pre-coating layer to form a mortar binding layer; and 5) casting a new cement concrete overlay layer after the surface of the mortar binding layer is dried and before cement in the mortar binding layer is subjected to initial setting. According to the method, the binding strength between the used cement concrete pavement and the newly casted cement concrete shield layer is improved obviously, the new and old cement concrete pavements can be adhered into a whole, the maintaining quality of the cement concrete pavement is improved greatly, and the continual service life of the cement concrete pavement is prolonged greatly.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
Fluorocarbon self-cleaning coating and preparation method thereof
The invention discloses a fluorocarbon self-cleaning coating comprising the following raw materials, by weight: 28-35 parts of fluorocarbon resin, 4-10 parts of acrylic resin, 0.5-5.0 parts of amino resin, 0.1-0.5 parts of a catalyst, 2-8 parts of alkoxy-modified silicone resin, 25-35 parts of a pigment filler, 0.1-1.0 parts of a defoaming agent, 0.5-2.5 parts of a dispersing agent, 1.0-4.0 parts of a matting agent, and 20-30 parts of a solvent. According to the fluorocarbon self-cleaning coating provided by the invention, while the service life of the fluorocarbon coating is ensured, the coating has the characteristics of low water contact angle and carbon black contamination resistance. The invention also discloses a preparation method of the fluorocarbon self-cleaning coating. The preparation process is simple, and can be easily industrialized.
Owner:NIPPON PAINT IND COATINGS SHANGHAI
Control method for mobile air conditioner and control device
ActiveCN104764156AImprove energy efficiencyReasonably adjust the working statusMechanical apparatusSpace heating and ventilation safety systemsEngineeringDry-bulb temperature
The invention provides a control method for a mobile air conditioner and a control device. The mobile air conditioner comprises a refrigerating system consisting of a compressor, an evaporator and a condenser, and a water striking motor for striking the condensed water on the evaporator to the condenser. The control method for the mobile air conditioner comprises the steps: detecting the real-time dry ball temperature and real-time relative humidity of the environment located by the mobile air conditioner, and recording the running duration of the compressor; according to the running duration of the compressor, the real-time dry ball temperature and real-time relative humidity, controlling the water striking motor to work, so that the condenser can reach the optimal heat exchanging effect. The technical scheme is capable of improving the heat exchanging efficiency of the condenser, and improving the energy efficiency of the mobile air conditioner.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
Preparation method of molybdenum disulfide-tourmaline composite material
InactiveCN108554424ALow priceAbundant resourcesCell electrodesCatalyst activation/preparationHigh energyMolybdenum disulfide
The invention provides a preparation method of a molybdenum disulfide-tourmaline composite material and relates to a composite material. The molybdenum disulfide-tourmaline composite material is prepared by a microwave hydrothermal method. The preparation method comprises the following steps: treating tourmaline, preparing a reactant raw material mixed liquid of molybdate, sulfide and tourmaline;pouring the reactant raw material mixed liquid into a polytetrafluoroethylene reaction kettle, placing the polytetrafluoroethylene reaction kettle into microwave hydrothermal equipment and completingmicrowave hydrothermal effective composition of the reactants; and washing and drying the product obtained by the microwave hydrothermal method to prepare the molybdenum disulfide-tourmaline compositematerial. The defects in the prior art for preparing the molybdenum disulfide composite material that the molybdenum disulfide composite material is liable to gather or stack again in the drying or annealing process as well as the defects of complex preparation process, long reaction cycle, high energy consumption and high cost are overcome.
Owner:HEBEI UNIV OF TECH
Perovskite-type light-sensitive material in cubic system structure and preparation method therefor
ActiveCN105118922AImprove mobilityEasy generationSolid-state devicesSemiconductor/solid-state device manufacturingTetragonal crystal systemPerovskite solar cell
The invention discloses a perovskite-type light-sensitive material in a cubic system structure and a preparation method therefor, and solves problems that the stability is poor and the optical absorptivity is low because an absorption layer in the perovskite-type light-sensitive material is in the cubic system structure. The perovskite-type light-sensitive material is in the cubic system structure comprises a substrate and the absorption layer disposed at the top of the substrate. The absorption layer is a CH3NH3PbI3-xClx perovskite material in a cubic system, and the thickness of the absorption layer is 530 nm. The method employs a thermal evaporation system to prepare a perovskite cell absorption layer CH3NH3PbI3-xClx on the surface of the substrate, and carries out annealing treatment under certain temperature, thereby achieving the switching of the crystal structure of the perovskite cell absorption layer from a tetragonal system structure to a cubic system structure, and improving the stability and exciton mobility ratio.
Owner:KUNMING UNIV
Wheel-support rolling bearing unit
InactiveCN101046225AImprove rolling fatigue lifeImprove wear resistanceHubsBall bearingsSurface roughnessHardness
In a wheel-support rolling bearing unit, in order to made a flange 6 thinner and thus lighten the bearing unit without impairing fatigue strength, machinability, and workability after forging, the composition of the alloy steel constituting the flange attached member (hub ring 2), the surface hardness of the root portion 14 on the axial outside surface side of the flange 6, and the surface roughness, are stipulated to thereby improve the durability ratio (fatigue limit strength / tensile strength) of the flange 6. In one aspect, the member is made from an alloy steel containing C: 0.5 to 0.65 weight %, Mn: 0.3 to 1.5 weight %, Si: 0.1 to 1.0 weight %, Cr: 0.01 to 0.5 weight %, S: 0.35 weight % or less, and any one type or more selected from 0.01 to 0.2 weight % of V, 0.01 to 0.15 weight % of Nb, and 0.01 to 0.15 weight % of Ti, with the rest being Fe and inevitable impurities, and the oxygen contents is 15ppm or less. Moreover, the surface hardness of the inner raceway 7a formed with the hardened layer, is between Hv 650 and 780, and the surface hardness of a portion not formed with the hardened layer is between Hv 230 and 300.
Owner:NSK LTD
Fuel battery unit cell, fuel battery unit cell array, fuel battery module, and fuel battery system
InactiveCN101278428ACatalytic activationIncrease the speed of oxidation reactionElectrolyte holding meansFuel cells groupingPtru catalystFuel cells
Owner:MICRO SILITRON INC
Electromagnetic water treatment apparatus
InactiveCN104098162AImprove electrolysis efficiencyWell formedWater/sewage treatment by magnetic/electric fieldsWater/sewage treatment by ion-exchangeElectrolysisWater flow
A provided electromagnetic water treatment apparatus comprises an ion exchange membrane, a water-flowing pipe, at least a positive plate and at least a negative plate; the positive plate and the negative plate are applied in the water-flowing pipe for applying an electric field. The electromagnetic water treatment apparatus also comprises an magnetic device used for applying a magnetic field perpendicular to the electric field in the water-flow pipe. By using the electric field and the magnetic field at the same time, the electromagnetic water treatment apparatus has the advantage of high electrolysis efficiency.
Owner:刘华鑫
Zinc-aluminium terres rares hydrotalcite compound heat stabilizer for polyvinyl chloride (PVC) as well as preparation and application of compound heat stabilizer
The invention relates to a zinc-aluminium terres rares hydrotalcite compound heat stabilizer for polyvinyl chloride (PVC) as well as preparation and application of the compound heat stabilizer. The compound heat stabilizer is obtained by optimally complexing zinc-aluminium terres rares hydrotalcite and magnalium hydrotalcite in a certain proportion. After surface modification by sodium stearate, the zinc-aluminium terres rares hydrotalcite and magnalium hydrotalcite have good compatability with the PVC. In the compound heat stabilizer, the synergistic effect between two hydrotalcites and the synergistic effect between zinc and rare-earth elements in the zinc-aluminium terres rares hydrotalcite are utilized, and the excellent property of the rare-earth element is also utilized, thereby greatly improving the heat stability of the PVC. The zinc-aluminium terres rares hydrotalcite compound heat stabilizer has the advantages of no toxicity, high efficiency, simple preparation process and low price; and the dosage of an additive in the course of processing does not influence the property of the product. The static thermal degradation test result indicates that the heat stabilizing time (blackening time of a sample) of the optimally complexed heat stabilizer for the PVC is 210 minutes.
Owner:CENT SOUTH UNIV
Carbon-nanosheet-loaded noble metal nanoparticle catalyst and preparation method and application thereof
InactiveCN110280240AWide variety of sourcesThe process is simple and easy to controlCell electrodesNanotechnologyInorganic saltsInstability
The invention discloses a carbon-nanosheet-loaded noble metal nanoparticle catalyst and a preparation method and application thereof. According to the method, an inorganic salt is taken as a template, a commercial carbon source is provided, noble metal at least having multi-catalytic prospects is at least deposited on the commercial carbon precursor to form a composite, then the carbon-nanosheet-loaded noble metal nanoparticle catalyst is obtained by a chemical or physical method; the method is characterized by comprising the following steps: (1) dissolving or dispersing a commercial noble metal precursor in a solvent to form a noble metal precursor solution or suspension; (2) mixing the commercial carbon precursor with the noble metal precursor solution or suspension evenly, then mixing with the inorganic salt template, drying and then calcining in an inert atmosphere to obtain the carbon-nanosheet-loaded noble metal nanoparticle catalyst. According to the catalyst, the problem of instability of noble metal nanoparticles in commercial application can be solved, the catalytic performance is improved significantly, the preparation process is controllable, environmental friendliness is realized, and the catalyst is suitable for mass production.
Owner:EAST CHINA UNIV OF TECH
Image conversion apparatus and display apparatus and methods using the same
Owner:SAMSUNG ELECTRONICS CO LTD
Method for synthesizing bismuth vanadate photocatalyst through starch self-combustion
InactiveCN105032397AHigh purityLow costWater/sewage treatment by irradiationDispersed particle separationBismuth vanadatePhysical chemistry
The invention provides a method for synthesizing a bismuth vanadate photocatalyst through starch self-combustion. According to the method, BiNO3-5H2O and NH4VO3 with the molar ratio being 1:1 are dissolved in diluted nitric acid and deionized water respectively, after the BiNO3-5H2O and the NH4VO3 are completely dissolved and evenly stirred, the two solutions are mixed and stirred, the pH value of the mixed solution is adjusted to be 0.65-0.75 through aqueous ammonia, starch is added into the mixed solution to serve as an accelerant, stirring continues for 40-80 min, and a pasty solution is obtained; the pasty solution is taken out and placed in a muffle furnace to be heated to 600-660 DEG C, heat is preserved for 6-7 hours, and fluffy powder BiVO4 can be obtained. The starch is used as the accelerant, the bismuth vanadate photocatalyst is synthesized through the self-combustion method, the appearance of the bismuth vanadate photocatalyst is in a net-shaped particle ball shape, the diameter of a particle ball ranges from 8 microns to 15 microns, the bismuth vanadate photocatalyst has large specific surface area and high adsorption capacity, photocatalytic activity is improved, and the photocatalyst has an obvious visual light absorbing effect. Besides, the synthesizing process is simple, cost is low, environment friendliness is achieved, and the method is suitable for industrial production.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Conductive coating composition
InactiveCN102132358AEasy generationHigh transparencyConductive layers on insulating-supportsConductive materialColloidal silicaOrganic solvent
Disclosed is a conductive coating composition containing an organic solvent dispersion of an intrinsically conductive polymer such as a doped polyaniline or a doped polythiophene, and a binder. The conductive coating composition is characterized in that the binder contains a polymerizable monomer-dispersed silica sol, which is obtained by dispersing a colloidal silica into a polymerizable organic compound monomer. The composition provides a conductive thin film having high transparency and excellent strength.
Owner:NISSAN CHEM CORP
Inductively coupled plasma reactor
ActiveCN104821269AEasy to adjust correctlyInhibition lossElectric discharge tubesCapacitanceEngineering
There is provided a plasma reactor comprising: a vacuum chamber (100) having a substrate support (111) on which a treated substrate (112) is positioned; a gas shower head (140) supplying gas into the interior of the vacuum chamber; a dielectric window (130) installed at an upper portion of the vacuum chamber; and a radio frequency antenna (151) installed above the dielectric window. The gas shower head and the substrate support are capacitively coupled to plasma in the interior of the vacuum chamber and the radio frequency antenna is inductively coupled to the plasma in the interior of the vacuum chamber. The capacitive and inductive coupling of the plasma reactor allows generation of plasma in a large area inside the vacuum chamber more uniformly and more accurate control of plasma ion energy, thereby increasing the yield and the productivity. The plasma reactor includes a magnetic core (150) installed above the dielectric window so that an entrance for a magnetic flux faces the interior of the vacuum chamber and covers the radio frequency antenna. Since the radio frequency antenna is covered by the magnetic core, the magnetic flux can be more strongly collected and the loss of the magnetic flux can be minimized.
Owner:UNKNOWN +1
Water-based environmental protection rust inhibitor for steel parts, and preparation method and application of water-based environmental protection rust inhibitor
ActiveCN107299338AImprove anti-corrosion performanceImprove rust resistanceMetallic material coating processesWater basedSilanes
The invention provides a water-based environmental protection rust inhibitor for steel parts, and a preparation method and application of the water-based environmental protection rust inhibitor. The rust inhibitor is prepared from polyvinyl butyral and a bis-silane phenolic compound which are used as film-forming agents, a corrosion inhibitor A, a corrosion inhibitor B, zinc phosphate used as anti-rust pigment, a dispersing agent, a complexing agent, modification additives, other additives, and a solvent formed by ethanol and deionized water. An anti-rust film formed by the rust inhibitor is good in mechanical properties, high in hardness and compactness, wear-resistant and scratch-resistant, and high in impact resistance; the water-based environmental protection rust inhibitor is good in compatibility with the anti-rust pigment, environmentally-friendly and free from pollution; the rust inhibitor is good in rust prevention effect, can be cured at the room temperature and is uniform in film formation; the rust inhibitor is high in binding force with a base material; the rust inhibitor is good in high-temperature stability and low-temperature stability, and enables a whole rust removal system to be stable.
Owner:无锡市恒利弘实业有限公司
Manufacturing method of polycrystal film and manufacturing method of oxide superconductor
InactiveCN1478919AEasy generationImprove superconductivityPolycrystalline material growthSuperconductors/hyperconductorsCrystal orientationIon beam
In the production method for a polycrystal thin film, when a polycrystal thin film is deposited on a polycrystal base material, the temperature of the polycrystal base material is set to the range of 150 to 250[deg.]C, the ion beam energy of an ion beam is controlled to the range of 175 to 225eV, and the ion beam is applied to the normal of the face to be film-formed in the polycrystal base material at an incident angle of 50 to 60 degrees. By the production method, the polycrystal thin film in which the inclination of grain boundaries composed by the same crystal axes of the crystal grains of the polycrystal thin film along the face parallel to the face to be film-formed in the polycrystal base material is suppressed to <=20 degrees, and having high crystal orientation properties can stably be produced.
Owner:THE FUJIKURA CABLE WORKS LTD
Paper diaper composite core and processing method thereof
The invention relates to the technical field of paper diaper processing, and particularly relates to a paper diaper composite core and a processing method thereof. The composite core comprises a facelayer, a wood pulp paper layer and a waterproof layer which are orderly arranged from top to bottom; the face layer comprises a soft cotton layer and a hydrophilic non-woven cloth layer; the soft cotton layer is arranged at the upper surface of the hydrophilic non-woven cloth layer, and an aromatic substance is arranged on the soft cotton layer; the upper surface and the lower surface of the hydrophilic non-woven cloth layer are provided with multiple strip-shaped glue coating points arranged at intervals; the soft cotton layer is connected to the upper surface of the hydrophilic non-woven cloth layer through the glue coating point. The paper diaper composite core has the beneficial effects of being simple in structure design; through processing a channel on the upper half part of the upper surface of a wood pulp paper layer, a macromolecular water absorbing grain is prepared to be fiber or cloth face, the macromolecule water absorbing grains are paved in the channel at intervals; thusthe paper diaper composite core prevents the macromolecule water absorbing grains in the composite core from dropping out and generating powder dust easily; the composite core body is not easy to clot.
Owner:DADDY BABY
Production process of ultrafine calcium carbonate powder
InactiveCN111333096AGood dispersionReduce secondary particle sizeCalcium/strontium/barium carbonatesMaterial nanotechnologyCalcium hydroxideCarbonization
The invention provides a production process of ultrafine calcium carbonate powder, and relates to the technical field of calcium carbonate powder. The production process of the ultrafine calcium carbonate powder comprises the following steps: firstly, carrying out a digestion reaction on water and quick lime according to a mass ratio of (7-8):1, ageing for 24-36 h, and sieving to obtain a refinedslurry; adding water into the refined slurry to prepare a calcium hydroxide slurry with the concentration of 1-1.5 mol / L; adding a crystal form control agent into 10 L of the calcium hydroxide slurry,introducing gas, and carrying out a carbonization reaction; finally, performing a reaction for 2-2.5 h at 70-80 DEG C; and centrifuging, drying and crushing the slurry obtained by the reaction to obtain the ultrafine calcium carbonate powder. The ultrafine sodium carbonate prepared by reasonable blending has small size, good solubility, good controllability and good dispersity, can be controlledto be prepared into calcium carbonate with different crystal forms and morphologies, and has different use effects.
Owner:立达超微工业(苏州)有限公司
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