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Electrolyte for lithium ion battery and preparation method thereof
ActiveCN102637901AGood effectImprove charge and discharge efficiencySecondary cellsLithium oxideLithium hydroxide
The invention discloses an electrolyte for a lithium ion battery and a preparation method thereof. The electrolyte consists of a main electrolyte, an electrolyte additive, a main solvent and a solvent additive. The preparation method comprises the following steps of: A. under the condition of vacuum or inert gas protection, respectively mixing the main solvent and the solvent additive with a drying agent (lithium oxide) which is dried to be at constant weight in advance, and mixing and filtering to remove the lithium oxide and lithium hydroxide sediment; B. uniformly mixing the dried main solvent and the dried solvent additive from the step A; and C. adding a main electrolyte mixture and an electrolyte additive into the solvent mixed in the step B, and agitating and dissolving under the vacuum and inert gas protection to prepare a solution with the mass mol concentration of the main electrolyte of 0.5-1.5 M. The electrolyte has the advantages of abundant resources, low price and no toxin, effectively improves the work temperature range of the battery and effectively prolongs the circulating service life of the battery, so that various types of the lithium ion batteries are manufactured; and the electrolyte is particularly suitable for manufacturing a lithium ion power battery with high power capacity and high multiplying power charging and discharging capacity.
Owner:广州云通锂电池股份有限公司
Cast aluminum alloy material for mine-used parts
The invention discloses a casting aluminum alloy material for a mine-used part, which relates to a casting aluminum alloy material. An aluminum alloy part used in underground coal mines can generate spark due to collision or friction to fire gas and result in explosion accidents. At present, aluminum equipment is forbidden under the coal mines or within 300 meters of an extraction face with hazardous biogases by many countries. The components in percentage by weight of the invention are: 1.0 to 2.5 percent of Zn,3.0 to 5.5 percent of Cu,0.1 to 0.3 percent of Cr,0.1 to 0.2 percent of Ti,0.02 to 0.05 percent of Be,0.01 to 0.03percent of Sr,0.3 to 0.8percent of Mn, 2.5 to 4.5 percent of Rx,less than or equal to 1.5 percent of Si, less than or equal to 0.5 percent of Mg,less than or equal to 0.5 percent of Fe, the balance being Al. The casting aluminum alloy material has the advantages of good safety of frictional spark, low density, good plasticity and corrosion resistance, etc.
Owner:山西省运城安瑞节能风机有限公司
White carbon black capable of improving processing performance of rubber and preparation method of white carbon black
ActiveCN107697922AReduced mechanical propertiesEasy to processSilicon compoundsReaction temperatureReaction system
The invention provides white carbon black capable of improving the processing performance of rubber and a preparation method of the white carbon black. The preparation method comprises the following steps: (1) heating water, adding water glass, and mixing the water with the water glass to obtain a reaction base solution, wherein the temperature in the whole process does not change; (2) adding acidand water glass into the reaction base solution for mixing and reaction, wherein the reaction temperature and the concentration of the water glass are constant, and are equal to the reaction temperature and the concentration of the water glass in the reaction bottom solution; (3) adjusting the pH of a reaction system; (4) adding acid and water glass for mixing and reaction, wherein the pH of thereaction system is 7.0 to 10.0 and is constant, and the reaction temperature is constant and is equal to that of the reaction base solution; (5) adding acid to adjust the pH till the pH is equal to the pH of aging reaction and the temperature is constant and equal to that of the reaction base solution; (6) carrying out aging reaction on white carbon black suspension under a condition that the temperature is equal to that of the reaction base solution, and then carrying out solid-liquid separation to obtain the white carbon black. The white carbon black provided by the invention can improve theprocessing performance of the rubber on the basis of not reducing the mechanical property of the rubber.
Owner:WUXI HENGCHENG SILICON IND CO LTD
Water-soluble paste agent containing paraquat dichloride
The invention belongs to the technical field of pesticide and relates to a water-soluble paste agent containing paraquat dichloride. The water-soluble paste agent comprises 0.5-45% of paraquat dichloride amounting to 0.362-32.58% of paraquat cation, 5-40% of surfactant, safe auxiliary components of emetic, warning coloration, stink agent and bitter agent, etc. and the balance of water. According to the invention, paraquat is processed into a paste agent, which can effectively avoid human or animal skin calcination caused by splashing of paraquat preparation; because the water-soluble paste agent has low fluidity, accidental taking or impulse swallow is reduced, and safety of the paraquat is enhanced substantially.
Owner:ANHUI COSTAR BIOCHEM CO LTD
Cerium-zirconium co-doped porous structure positive electrode material and preparation method thereof
ActiveCN111276688AEvenly distributedLamellar structure is stableSecondary cellsPositive electrodesElectrical batteryPhysical chemistry
The invention provides a cerium-zirconium co-doped porous structure positive electrode material and a preparation method thereof. The method comprises the following steps: (1) preparing a ternary solution, a cerium-zirconium blended salt solution, a precipitant solution and a complexing agent solution for later use; (2) preparing a base solution and stirring; (3) injecting the ternary solution, the mixed solution of the cerium salt and the zirconium salt, the precipitant solution and the complexing agent solution into the base solution, carrying out reaction of the stage I and the stage II, and stopping feeding until the reaction reaches the target particle size; (4) centrifugally washing, drying, screening and deironing the reacted slurry to obtain a precursor; and (5) mixing the precursor with a lithium source, and sintering to obtain the positive electrode material. According to the preparation method, the blended cerium-zirconium salt solution is doped into the ternary solution byutilizing liquid-phase doping, so that doped elements are uniformly distributed, and the battery cycle performance of the material is improved by utilizing the synergistic effect of the doped elements; the positive electrode material with a pore structure, high purity and good performance is prepared through process control in different reaction stages.
Owner:JINGMEN GEM NEW MATERIAL +1
Method for preparing high-purity lead-acid barium conductive material for lead-acid storage battery
InactiveCN102134094AReduce production efficiencyIncrease production costCell electrodesPlumbates/plumbitesInternal resistanceConductive materials
The invention relates to a method for preparing a high-purity lead-acid barium conductive material for a lead-acid storage battery, in particular to a lead-acid barium conductive material applied to a lead-acid storage battery. Lead monoxide and barium oxide are used as main raw materials; and the material is prepared by the steps of proportioning, salinization, co-precipitation, drying, sintering, crushing and the like. The lead-acid barium material is a powdery material with good electric conductivity, and can be used as a conductive additive and applied in a storage battery polar plate. The internal resistance of the battery is reduced, the initial capacity of the battery is increased, and good charge receiving capacity is obtained.
Owner:JIANGSU HUAFU STORAGE NEW TECH DEV +1
Preparation and purification method for 2-tert-amylanthraquinone
ActiveCN107162889AHigh yieldSimple processQuinone separation/purificationBenzoic acidPurification methods
The invention discloses a preparation and purification method for 2-tert-amylanthraquinone. The method includes: subjecting phosphorus pentoxide and trifluoroacetic acid to mixed heating to certain temperature, dissolving 2-(4'-tert-amylbenzoyl)benzoic acid (called ABB acid for short) with a solvent and then adding the product dropwise into the mixed phase, performing mixing and then carrying out reaction at certain temperature, at the end of the reaction, pouring the reaction liquid into cold water, conducting standing and layering, collecting the oil layer, then adding a certain amount of an adsorbent for adsorption of tar impurities at certain temperature, then performing filtering, and subjecting the filtrate to distillation crystallization, thus obtaining a high purity 2-tert-amylanthraquinone product. The method provided by the invention has the advantages of mild reaction conditions, simple operation, few side reaction, and recyclability of adsorbent, and lowers the separation cost.
Owner:CHINA CATALYST HLDG CO LTD
Aquacade soluble colloidal solvent
InactiveCN104054698AReduce security risksSenior Liquidity LowBiocideAnimal repellantsBromineBittering Agents
The invention belongs to the technical field of pesticides, and relates to an aquacide soluble colloidal solvent. The aquacide soluble colloidal solvent contains the following components in percentage by weight: 1%-40% of aquacide dibromide, 0.54%-21.42% of reduced aquacide cations, 5%-30% of surface active agents, safe auxiliary components, namely vomitives, warning coloration, odor agents, bittering agents and the like, and the balance of water. According to the invention, the aquacide is processed into the soluble colloidal solvent, so that an aquacide preparation is effectively reduced, so that the skin of human or animals is prevented from being burnt by being splashed, and the safety risk of the aquacide is outstandingly lowered due to low high-level flowability and small mistaken or impulsive swallowing quantity of the aquacide soluble colloidal solvent.
Owner:NANJING HUAZHOU PHARMA
Hidden synchronous spring lock unlocking method, key and lock cylinder
ActiveCN104675205AIncrease the amount of keysMutual open rate is lowKeysCylinder locksEngineeringKeyhole
The invention discloses a concealed synchronous pin tumbler lock. The pin tumbler lock mainly comprises a key and a lock cylinder. The key mainly comprises a key handle shell, a reset spring, a reset spring strip, a baffle locking piece, a baffle locking gear, a cylindrical shaft, a baffle motion guiding piece, a baffle and a tooth pattern part. The lock cylinder mainly comprises a lock cylinder shell, a compensation block, a spring strip, a shelter, a lock cylinder rotor, a rightward pin tumbler, a leftward pin tumbler, a lock cylinder bottom plate, a clamping spring and a spring. According to the lock cylinder in the pin tumbler lock, when the lock is opened with the key, the interior of the lock cylinder must be totally separated from the outside, and therefore the possibility of technical unlocking does not exist. Because the pin tumblers will not touch the inner wall of the lock cylinder shell, it is impossible that the actual positions of the pin tumblers are sensed by poking the pin tumblers, and therefore technical unlocking cannot be achieved through the attempt to poke the pin tumblers to the unlocking positions. The position, allowing the lock to be opened, of each pin tumbler is unique, and thus pin tumbler skip unlocking can be avoided. The shapes and the arrangement mode of the pin tumblers are changed, and thus the secret key amount of the lock is greatly increased. The technical requirement for manufacturing of the lock is not substantially raised, and thus the production cost will not be increased substantially.
Owner:彭世明
Manufacturing process of high-performance duplex stainless steel flange for seawater desalination equipment
InactiveCN108504962AReduce usageUsage will not increaseMolten spray coatingChemical compositionIngot
The invention provides a manufacturing process of a high-performance duplex stainless steel flange for seawater desalination equipment. The manufacturing process comprises the following steps that a raw material steel ingot is obtained, wherein the chemical components of the steel ingot comprise, by weight, 0.10%-0.20% of C, 12.0%-16.0% of Cr, 2.12%-2.15% of Ni, 21.0%-25.0% of Mn, 0.50%-1.00% of Cu, 0.10%-0.20% of N, 1.00%-2.00% of Si, 1.00%-2.00% of Al, 0.06%-0.08% of V, less than or equal to 0.035% of P, less than or equal to 0.02% of S, 0.03%-0.10% of Re, and the balance Fe and non-removable impurities; a corrosion-resistant metal coating is formed on the surface of the flange in a plasma spraying mode; and a layer of polyurethane finish paint is applied on the surface of the corrosion-resistant metal coating, and a layer of nano-solution is applied on the surface of the polyurethane finish paint.
Owner:JIANGYIN HENGRUN HEAVY IND
Nut shell breaking method and nut shell breaking machine capable of automatically controlling shell breaking pressure
PendingCN110200294AImproved shell breaking efficiencyIncrease production costHuskingHullingAutomatic controlDust pollution
The invention relates to a nut shell breaking method and a nut shell breaking machine which is capable of automatically controlling shell breaking pressure, capable of breaking nut shells without damaging nuts, free of flowing dust pollution, high in shell breaking efficiency, simple in structure and easy to manufacture and mount. According to the technical scheme, the nut shell breaking method includes the steps of firstly, nuts are placed into vertically-through sleeves, wherein the diameter of the sleeves is larger than that of the nuts; push pressure which increases gradually is applied toone ends of the nuts, and counter-acting force which is identical with the push pressure in magnitude and opposite in direction is applied to the other ends of the nuts; sensors are used to monitor the push pressure online, wherein at least one of the push pressure and the counter-acting force is applied through opening cutters; thirdly, when the sensors monitor the sudden decreasing, which indicates that the nut shells are opened, of the push pressure, the push pressure and the counter-acting force applied to the nuts are removed immediately to complete nut shell breaking.
Owner:临安小平五金机械有限公司
Engine common in joggle type
InactiveCN1936316AProduction costs will not increaseNo increase in size and costElectric motor startersMachines/enginesTime delaysLinkage concept
The present invention discloses a starter motor 1 comprising a motor 2 equipped with an armature 11, an electromagnetism switch 3, a main contact (MC) capable of closing or cutting an electric circuit (EC) of motors, an electromagnetic clutch 7 used to linking or cutting the torque transfer path of said starter motor 1. The starter motor 1 further comprises a time delay mechanism 7, 8, which allows the foundation of said torque transfer path between the motor 2 and engine ring gears 30 while clutch slice 37 is activated into linkage state before the armature 11 runs.
Owner:DENSO CORP
Manufacturing process of corrosion-resistant flange for petrochemical equipment
InactiveCN108754347AReduce usageUsage will not increaseLiquid surface applicatorsMolten spray coatingMetal coatingPlasma coating
The invention provides a manufacturing process of a corrosion-resistant flange for petrochemical equipment. The manufacturing process comprises the following steps of: obtaining a raw material steel ingot, wherein the raw material steel ingot comprises the following chemical components of, by weight, 0.10% to 0.20% of C, 12.0% to 16.0% of Cr, 2.12% to 2.15% of Ni, 21.0% to 25.0% of Mn, 0.50% to 1.00% of Cu, 0.10% to 0.20% of N, 1.00% to 2.00% of Si, 1.00% to 2.00% of Al, 0.06% to 0.08% of V, smaller than or equal to 0.035% of P, smaller than or equal to 0.02% of S, 0.03% to 0.10% of Re and thebalances Fe and non-removable impurities; forming a corrosion-resistant metal coating on the surface of the flange in a plasma coating manner; coating the surface of the corrosion-resistant metal coating with a polyurethane finish paint layer; and coating the surface of the polyurethane finish paint with a nanometer solution layer.
Owner:JIANGYIN HENGRUN HEAVY IND
Flux for heat resistant magnesium alloy
Owner:GUIZHOU BRANCH CHINA ALUMINUM IND
Method for separating liquid sulfur in carbon disulfide preparation technology
The invention discloses a method for separating liquid sulfur in the carbon disulfide preparation technology. A cavity internally provided with a steam heating disc is formed, the liquid sulfur continuously flows through the steam heating disc from top to bottom to then flow out from the bottom of the cavity, the steam heating disc heats the liquid sulfur, and carbon disulfide and hydrogen sulfide in the liquid sulfur are gasified; a jacketed pipe is arranged, the gasified carbon disulfide and the gasified hydrogen sulfide are conveyed to an inner pipe body or an outer pipe body of the jacketed pipe, and meanwhile cooling water flows in the outer pipe body or the inner pipe body; the carbon disulfide is liquefied under the effect of the cooling water and is downwards exhausted along the inner pipe body or the outer pipe body, and the hydrogen sulfide is continuously exhausted upwards along the inner pipe body or the outer pipe body. By means of the method, the carbon disulfide and the hydrogen sulfide can be sufficiently separated out from the liquid sulfur, and the separated liquid sulfur and the separated carbon disulfide can be recovered again.
Owner:CHENGDU GRACE FIBER +1
Brick-red xerocomus silwoodensis test tube sporocarp primordium inducing method
InactiveCN103609338AReduce manufacturing costEasy to implementHorticulture methodsPlant tissue culturePrimordiumEdible mushroom
The invention relates to a brick-red xerocomus silwoodensis test tube sporocarp primordium inducing method, and belongs to the technical field of wild edible fungus cultivation. Xerocomus silwoodensis belongs to famous and precious wild edible funguses and is one of main delicious funguses at markets in summer of Yunnan province. Because the xerocomus silwoodensis is pine tree ectotrophic mycorrhiza fungus, can not be cultivated artificially and is all naturally picked in the field, the price is high. In odder to guarantee whole-year supplying of the bolete and meet dining requirements of the public, the price can be lowered only by achieving artificial cultivation. But many blind point problems exist in artificial cultivation of the bolete, for instance, hypha grows very slowly on a culture medium, and the symbiotic mechanism between the bolete and symbiotic trees still can not be known completely and clearly. The method includes the technical tasks that small sporocarp tissue blocks picked in the field are used as material, direct induced differentiation is performed on sporocarp primordium capable of being fully developed on the test tube culture medium, and the method has the advantages of being direct, simple, low in manufacturing cost and the like and provides an important basis for large-scale indoor artificial cultivation.
Owner:YUNNAN UNIV
Novel bacillus preparation for veterinary use and preparation method of novel bacillus preparation
PendingCN110279723AReasonable compositionExtended shelf lifeAerosol deliveryDigestive systemChemistryAluminium
The invention discloses a novel bacillus preparation for veterinary use. Every 100 g of the drug contains, 5.0-10.0 g of polyethylene glycol 800, 10.0-25.0 g of polyethylene glycol 1000, 1.0-5.0 g of polyethylene glycol 1500, 10.0-20.0 g of glycerol diacetate, 0.01-1.0 g of aluminum stearate, 0.01-3.0 g of bacillus powder, 0.7-1.0 g of sodium chloride, 0.1-4.0 g of anhydrous dextrose and the balance of deionized water. The prepared bacillus preparation is a solid at the normal temperature, is favorable for long-time storage of probiotics, can be converted into a liquid through slight heating during use and is favorable for recovery of bacillus. During drinking use, probiotics can be suspended in water for a long time and cannot sink into the bottom of water, uniform oral medication is guaranteed, waterlines cannot be blocked, and the preparation is convenient to use and remarkable in curative effect. Meanwhile, the invention also discloses a preparation of the novel preparation. The preparation method is high in operability and is favorable for production conversion.
Owner:李会芳
Soluble gel agent containing diquat dichloride and preparation method of soluble gel agent
The invention belongs to the technical field of pesticides, and relates to a soluble gel agent containing diquat dichloride and a preparation method of the soluble gel agent. The soluble gel agent contains 1-40% by mass of the diquat dichloride, 10-20% by mass of a surfactant, safe auxiliary components such as an emetic (2-amino-6-methyl-4-propyl-[1,2,4]triazolo[1,5-a]pyrimidin-5-one), a warning color (bright blue) and an odor agent (pyridine), and the balance of water. According to the method provided by the invention, the diquat dichloride is processed into the soluble gel agent, so that themethod can effectively reduce splashing of a diquat preparation to burn skins of human or animals, and significantly reduce a safety risk of diquat because the soluble gel agent has low high-grade fluidity and a low mistook eating or impulsive swallowing quantity.
Owner:NANJING REDSUN
Water-soluble gel preparation containing paraquat dichloride
ActiveCN102326553BReduce security risksLess splash burnBiocideAnimal repellantsGel preparationParaquat
The invention relates to a water-soluble gel preparation containing paraquat dichloride, which belongs to the technical field of pesticide. The water-soluble gel preparation comprises 0.5 to 45 mass percent of paraquat dichloride (which accounts for 0.362 and 32.58 mass percent of paraquat cation) and 5 to 40 percent of surfactants and also comprises safe auxiliary ingredients such as emetic, warning colouration, odor agents, bitter agents and the like and the balance water. The water-soluble gel preparation containing the paraquat dichloride has the advantages that the excellent weeding activity is realized, the use method is flexible and convenient, in addition, the water-soluble gel preparation is safer to people and animals, and the production and the use are more convenient.
Owner:NANJING REDSUN BIOCHEM CO LTD +1
Thermo-sensitive paper sensitizer ethylene glycol diphenyl ether preparation method
ActiveCN110041176AReduce manufacturing costProduction costs will not increaseEther preparation by ester reactionsDiphenyl etherBenzene
The invention relates to a thermo-sensitive paper sensitizer ethylene glycol diphenyl ether preparation method. According to the preparation method, halogeno benzene and ethylene glycol are utilized as raw materials, any one or several of 2,2'-dipyridyl and derivatives of the 2,2'-dipyridyl is utilized as ligand, and under the existence of alkali and a solvent, Cu(I) or Cu(II) is utilized as a catalyst to prepare and obtain ethylene glycol diphenyl ether. Compared with the prior art, ethylene glycol and bromobenzene are utilized reaction raw materials, so that ethylene glycol diphenyl ether production cost is greatly reduced; in addition, the ligand 2,2'-dipyridyl can be recycled, so that production cost cannot be increased; thus, larger implement value and social economic benefit are achieved.
Owner:QUZHOU UNIV
Core switching and sealing system of valve
ActiveCN101592254AProduction costs will notIncrease production costSpindle sealingsPlastic materialsGasket
The invention discloses a core switching and sealing system of a valve and belongs to the field of core sealing. The system comprises a valve rod with an annular groove and a plastic gasket in the same volume as the annular groove, wherein the annular groove has a large cavity and a small opening and is used for completely clamping the plastic gasket in the annular groove; and the thickness of the plastic gasket and the depth of the annular groove are equal, and the plastic gasket is used together with the annular groove to complete the sealing of the valve. The annular groove is designed with the shape with the large cavity and the small opening for completely clamping the plastic gasket in the annular groove, the volume of the annular groove is equal to that of the plastic gasket and the thickness of the plastic gasket is equal to the depth of the annular groove, so that the plastic material has no space for cold flows and the valve sealing is reliable even in alternating temperature environments are guaranteed effectively; and at the same time, the plastic gasket cannot separate from the valve rode due to the clamping action of the annular groove.
Owner:河南熊川流体工程有限公司
A kind of high-density alloy magnetic core and its preparation method
ActiveCN113724994BHigh densityHigh dimensional accuracyTransformers/inductances magnetic coresInductances/transformers/magnets manufactureHigh densityAlloy
The invention discloses a high-density alloy magnetic core and a preparation method thereof. The preparation method of the high-density alloy magnetic core of the present invention comprises the following steps: 1) mixing metal oxide powder and sintering aid to obtain prefabricated body powder; 2) mixing prefabricated body powder and resin, granulating and drying and pressing to obtain a prefabricated body with a hollow structure; 3) mixing magnetic powder and resin to obtain a magnetic core powder with a sintering shrinkage rate smaller than that of the prefabricated body powder; 4) putting the prefabricated body into a mold, and then injecting the magnetic core powder into the mold and the prefabricated body to obtain a composite green body, deglue and sinter, and then separate the magnetic core to obtain a high-density alloy magnetic core. The invention prepares an alloy magnetic core with high density and high dimensional precision by improving the material composition and preparation process, and the production cost will not increase while the density and dimensional precision are improved, fully satisfying high frequency and high current The application requirements of the power supply inductance device.
Owner:广东泛瑞新材料有限公司
High-strength plant fiber material
The invention discloses a high-strength plant fiber material. The high-strength plant fiber material comprises plant-fiber elastic sheets, wherein the direction of the plant-fiber elastic sheets from a production line is used as the longitudinal direction; the direction of the plant-fiber elastic sheets vertical to the production line is used as the horizontal direction; more than one layer of longitudinal elastic sheets and more than one layer of horizontal elastic sheets are stacked to obtain the plant fiber material; and long sisal-hemp layers are arranged between the longitudinal elastic sheets and the horizontal elastic sheets. The high-strength plant fiber material disclosed by the invention has the advantages that the plant-fiber elastic sheets are staggered and stacked in the longitudinal and horizontal directions, so that the strength of the stacked plant fiber material can be improved, the used quantity of the plant-fiber elastic sheets can be reduced and the effect of reducing the cost can be achieved; simultaneously, the size change of the plant fiber material produced by adopting a staggered lamination mode is relatively small; when the plant fiber material is finally cut and sized, the cutting quantity can be reduced; and the long sisal-hemp layers are arranged between the longitudinal elastic sheets and the horizontal elastic sheets, so that the plant fiber material has the relatively high elastic performance and the relatively good toughness.
Owner:GUIZHOU DAZIRAN TECH
A method for preparing and purifying 2-tert-amylanthraquinone
ActiveCN107162889BHigh purityYield has no effectQuinone separation/purificationBenzoic acidAnthraquinones
The invention discloses a method for preparing and purifying 2-tert-amyl anthraquinone. Phosphorus pentoxide and trifluoroacetic acid are mixed and heated to a certain temperature, and 2-(4'-tert-amylbenzoyl)benzoic acid (hereinafter referred to as ABB acid) is dissolved in a solvent and added dropwise to the mixed phase. After mixing, the reaction is carried out at a certain temperature. The agent adsorbs tar-like impurities at a certain temperature, and after the adsorption, the reaction solution is filtered for distillation and crystallization to obtain a high-purity 2-tert-amylanthraquinone product. The invention has the advantages of mild reaction conditions, simple operation, less side reactions, recyclable adsorbent, and reduced separation cost.
Owner:CHINA CATALYST HLDG CO LTD
A kind of preparation method of thermal paper sensitizer ethylene glycol diphenyl ether
ActiveCN110041176BReduce manufacturing costProduction costs will not increaseEther preparation by ester reactionsDiphenyl etherPolymer science
The invention relates to a preparation method of thermal paper sensitizer ethylene glycol diphenyl ether. The preparation method uses halogenated benzene and ethylene glycol as raw materials, any one or more of 2,2'-bipyridine and its derivatives as a ligand, and in the presence of a base and a solvent, Cu(I ) or Cu(II) as a catalyst to prepare ethylene glycol diphenyl ether. Compared with the known technology, the production cost of ethylene glycol diphenyl ether is greatly reduced after using ethylene glycol and bromobenzene as the reaction raw materials. In addition, the ligand 2,2'-bipyridine can be recycled and used without increasing the production cost. It has great implementation value and social and economic benefits.
Owner:QUZHOU UNIV
A method for separating liquid sulfur in a carbon disulfide preparation process
The invention discloses a method for separating liquid sulfur in the carbon disulfide preparation technology. A cavity internally provided with a steam heating disc is formed, the liquid sulfur continuously flows through the steam heating disc from top to bottom to then flow out from the bottom of the cavity, the steam heating disc heats the liquid sulfur, and carbon disulfide and hydrogen sulfide in the liquid sulfur are gasified; a jacketed pipe is arranged, the gasified carbon disulfide and the gasified hydrogen sulfide are conveyed to an inner pipe body or an outer pipe body of the jacketed pipe, and meanwhile cooling water flows in the outer pipe body or the inner pipe body; the carbon disulfide is liquefied under the effect of the cooling water and is downwards exhausted along the inner pipe body or the outer pipe body, and the hydrogen sulfide is continuously exhausted upwards along the inner pipe body or the outer pipe body. By means of the method, the carbon disulfide and the hydrogen sulfide can be sufficiently separated out from the liquid sulfur, and the separated liquid sulfur and the separated carbon disulfide can be recovered again.
Owner:CHENGDU GRACE FIBER +1
Core switching and sealing system of valve
The invention discloses a core switching and sealing system of a valve and belongs to the field of core sealing. The system comprises a valve rod with an annular groove and a plastic gasket in the same volume as the annular groove, wherein the annular groove has a large cavity and a small opening and is used for completely clamping the plastic gasket in the annular groove; and the thickness of the plastic gasket and the depth of the annular groove are equal, and the plastic gasket is used together with the annular groove to complete the sealing of the valve. The annular groove is designed with the shape with the large cavity and the small opening for completely clamping the plastic gasket in the annular groove, the volume of the annular groove is equal to that of the plastic gasket and the thickness of the plastic gasket is equal to the depth of the annular groove, so that the plastic material has no space for cold flows and the valve sealing is reliable even in alternating temperature environments are guaranteed effectively; and at the same time, the plastic gasket cannot separate from the valve rode due to the clamping action of the annular groove.
Owner:河南熊川流体工程有限公司
Water-soluble paste agent containing paraquat dichloride
The invention belongs to the technical field of pesticide and relates to a water-soluble paste agent containing paraquat dichloride. The water-soluble paste agent comprises 0.5-45% of paraquat dichloride amounting to 0.362-32.58% of paraquat cation, 5-40% of surfactant, safe auxiliary components of emetic, warning coloration, stink agent and bitter agent, etc. and the balance of water. According to the invention, paraquat is processed into a paste agent, which can effectively avoid human or animal skin calcination caused by splashing of paraquat preparation; because the water-soluble paste agent has low fluidity, accidental taking or impulse swallow is reduced, and safety of the paraquat is enhanced substantially.
Owner:ANHUI COSTAR BIOCHEM CO LTD
A kind of white carbon black that improves rubber processing performance and preparation method thereof
ActiveCN107697922BEasy to processNo need to increase the use ofSilicon compoundsReaction temperatureOrganic chemistry
Owner:WUXI HENGCHENG SILICON IND CO LTD
A kind of cerium-zirconium co-doped porous structure cathode material and preparation method thereof
ActiveCN111276688BEvenly distributedImprove cycle performanceSecondary cellsPositive electrodesElectrical batteryIron removal
The invention provides a cerium-zirconium co-doped porous structure cathode material and a preparation method thereof. The method is as follows: (1) prepare ternary solution, cerium-zirconium blended salt solution, precipitant solution and complexing agent solution for use; (2) prepare bottom liquid and stir; (3) mix ternary solution, cerium salt and zirconium The mixed solution of salt, the precipitating agent solution and the complexing agent solution are injected into the bottom liquid, and the reaction of stage I and stage II is carried out until the reaction reaches the target particle size, and the feeding is stopped; (4) the slurry after the reaction is centrifugally washed , drying, screening, and iron removal to obtain a precursor; (5) mixing the precursor with a lithium source and sintering to obtain a positive electrode material. The present invention uses liquid phase doping to dope the blended cerium-zirconium salt solution into the ternary solution, so that the doping elements are evenly distributed, and the battery cycle performance of the material is improved by utilizing their synergistic effect; through the process control in different reaction stages, the A positive electrode material with a pore structure, high purity and good performance is prepared.
Owner:JINGMEN GEM NEW MATERIAL +1
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