28 results about "Hydroxide potassium" patented technology

When potassium hydroxide (KOH) or other activating agents are used to activate carbon, the hydrochloric acid used to remove it may damage the stainless steel equipment used in the process. Herein, water and citric acid are used to wash the carbon after its activation to reduce damage to the equipment. Prior to activation, a slurry of coal, petroleum coke or other carbonaceous material mixed with water and KOH is dried in layers. During drying, the KOH repeatedly precipitates as a crust on the layers and is repeatedly blended back into the mixture. Activation temperature and duration may be selected to control the pore size distribution in the activated carbon.

The invention belongs to the technical field of labor protection articles, and particularly relates to an environment-friendly butyronitrile glove and a preparation method thereof.The environment-friendly butyronitrile glove comprises a glove core, an environment-friendly butyronitrile rubber layer is fixed to the outer surface of the glove core in a gum dipping mode after the glove core is soaked in pretreatment liquid, and the environment-friendly butyronitrile rubber layer contains carboxyl butyronitrile latex; the environment-friendly butyronitrile rubber material is prepared by firstly pretreating carboxyl butyronitrile rubber latex and then mixing the pretreated carboxyl butyronitrile rubber latex with sodium dodecyl benzene sulfonate, a 5% potassium hydroxide solution, a 50% zinc oxide dispersion liquid, a 50% sulfur dispersion liquid, a 50% zinc dimethyldithiocarbamate dispersion liquid, a 50% titanium dioxide dispersion liquid, color paste and an alkali swelling type thickening agent. According to the invention, triple synergy of standard environmental protection, stable performance and controllable cost is realized, the industrial problem that protection performance, environmental benefits and economical efficiency are difficult to consider in the prior art is solved, and the dual requirements of modern environmental protection and use experience are met.

A silicon carbide wafer having a seed end and a dome end opposite to the seed end. In the silicon carbide wafer, a basal plane dislocation (BPD) density detected by potassium hydroxide (KOH) etching is less than 550 pcs / cm2 at both the seed end and the dome end, and a basal plane dislocation (PL-BPD) density detected by photoluminescence is less than 2000 pcs / cm2 at both the seed end and the dome end.

The application relates to the field of aerogel fibers, and discloses a yarn-reinforced nanometer aramid composite aerogel fiber and a preparation method thereof. The composite aerogel fiber comprises aramid 1313 yarn and an aerogel layer wrapped outside the aramid 1313 yarn; the aerogel layer is prepared from aramid 1313 short-cut fibers, dimethyl sulfoxide solvent, potassium hydroxide, modified nanometer zinc oxide, anhydrous ethanol, deionized water and acetic acid; and the modified nanometer zinc oxide is prepared from nanometer zinc oxide, an ethanol aqueous solution, gamma-aminopropyl triethoxysilane and acetic acid. The aerogel fiber has good mechanical properties and antibacterial properties.

A method and system for recycling aluminium-air batteries and recovering valuable components, aluminium trihydroxide (ATH) and potassium hydroxide (KOH) electrolyte includes selective precipitation and electrodialysis techniques to efficiently recover ATH and KOH with high purity. The process begins with a feed collection unit (102) receiving a 5 recycled solution mixture from batteries, which is then filtered by a filtration unit (104) to filter out sustemded particles of ATH and impurites. The filtered solution is subjected to precipitation in a precipitation unit (108) to precipitate ATH, and thereafter to electrodialysis in an electrodialysis unit (114) to convert the potassium salt solution remaining after the precipitation to KOH electrolyte and an acid. The electrodialysis is carried out using ion-0 selective membranes and acid acid obtained from the electrodialysis unit (114) in the precipitation unit (108).

A silicon carbide wafer having a seed end and a dome end opposite to the seed end. In the silicon carbide wafer, a basal plane dislocation (BPD) density detected by potassium hydroxide (KOH) etching is less than 550 pcs / cm2 at both the seed end and the dome end, and a basal plane dislocation (PL-BPD) density detected by photoluminescence is less than 2000 pcs / cm2 at both the seed end and the dome end.

The utility model discloses a kind of storage device of potassium hydroxide, including storage container, KOH input port, inert gas input port, circulating pump system, observation port, sealing unit, cooling unit and control module are equipped on storage container;The control module is connected with metal ion concentration sensor, temperature sensor, flow sensor and pH monitor;The control module is used to collect the above sensor data, controls circulating pump system and cooling unit operating state, adjusts soft water supply flow, and triggers early warning when parameter is abnormal, simultaneously, operating data is uploaded to remote platform.

The invention relates to the technical field of bamboo-based supercapacitors, in particular to a bamboo-based electrode material and a preparation method and application thereof. Mixing bamboo chips with potassium hydroxide, absolute ethyl alcohol and water, dipping, and drying to obtain a dipping material; the mass ratio of the potassium hydroxide to the bamboo chips is (1-4): 1; and carrying out heat treatment on the impregnated material in a nitrogen atmosphere to obtain the bamboo-based electrode material. The symmetric supercapacitor assembled by using two 2 mm ABCM-2 has high specific capacitance and high energy / power density. In addition, the assembled supercapacitor has relatively high low-temperature tolerance, and the specific capacitance at-25 DEG C is 3.9 F cm <-2 >.

The application discloses a multi-surface washing sink structure used in a potassium hydroxide etching cleaning stage, relates to the technical field of wafer etching and cleaning, and specifically comprises a cleaning box and a box door, wherein the cleaning box is provided with the box door on one side, rotating spray washing cavities and soaking cavities are arranged in the cleaning box, and a telescopic control assembly is arranged in the cleaning box; through the compact design of integrating the vertical soaking cavity and the horizontal rotating spray washing cavity, the automatic cooperation of the overturning placement mechanism and the telescopic control assembly, efficient posture switching of the wafer from vertical soaking to horizontal washing is realized, in the dynamic washing mechanism, the strip-shaped conveying assembly and the swing nozzle are linked and driven to rotate the wafer, and multi-angle spraying is cooperated to completely eliminate the cleaning blind area of surface residues.

The invention discloses an anti-cutting butyronitrile glove, which is prepared from the following components in parts by mass: 100 parts of butyronitrile latex, 0.5 to 1.5 parts of sulfur, 1 to 2 parts of vulcanization accelerator, 0.5 to 1 part of potassium hydroxide and 30 to 50 parts of modified carborundum, wherein the surface of the modified carborundum is coated with polyurethane. According to the invention, the carborundum is added, so that the butyronitrile gloves have anti-cutting performance, meanwhile, in order to improve the dispersibility of the carborundum and the compatibility of the carborundum and nitrile rubber, the carborundum is coated with polyurethane, so that the carborundum is fully dispersed in glove latex, and the prepared butyronitrile gloves can pass the European Union AST MF2992-15 standard anti-cutting grade A1 test.

The invention provides a method for preparing a potassium sulfate fertilizer and co-producing a cement raw material by using ardealite. According to the method disclosed by the invention, the potassium sulfate fertilizer is prepared by a one-step potassium hydroxide leaching ardealite method, and meanwhile, the byproduct filter residue is subjected to low-temperature calcination, so that cement raw materials (SiO2 and CaO) can be obtained; the ardealite is directly leached through potassium hydroxide, high-purity potassium sulfate is obtained in one step, the cement raw material is directly obtained through low-temperature calcination of by-products, the process is simple, environment-friendly and efficient, and double-industry high-value utilization of solid waste is achieved. The prepared potassium sulfate fertilizer is high in purity, chloride ions and other elements unfavorable for soil are not introduced, and meanwhile a thought is provided for effectively absorbing a large amount of solid waste, namely ardealite; the calcining temperature is only 300-600 DEG C, compared with the prior art, the calcining temperature is lower, the energy consumption is lower, the cement raw materials (SiO2 and CaO) are obtained at the same time, and the maximum efficient utilization of the phosphogypsum is realized.

The application relates to a composite material structure for fire prevention and a preparation method and a composite side window glass. The composite material structure for fire prevention at least comprises an interpenetrating network layer, the interpenetrating network layer is an interpenetrating network structure layer made of an adhesive and K2O.nSiO2-based nanometer hard fibers with a diameter of 900 nm to 2.5 mu m and a modulus of 4.5 to 5.5; the K2O.nSiO2-based nanometer hard fibers with a high modulus are prepared from the following raw materials in parts by weight: 18 to 75 parts of tetraethyl orthosilicate, 0.1 to 0.5 parts of nitric acid, 30 to 120 parts of deionized water, 50 to 200 parts of a polyethylene glycol aqueous solution, 1 to 2 parts of ethanol, 0.5 to 1 part of a reactive emulsifier SE-10N, 0.4 to 1.2 parts of ammonia water and 3 to 6 parts of potassium hydroxide by using a multi-channel in-situ electrospinning method. The composite side window glass has the functions of fire prevention and heat insulation and has a long service life.

Provided are a silicon carbide wafer and a method for forming the same. The silicon carbide wafer has a seed end and a domed end opposite the seed end. In a silicon carbide wafer, the density of substrate surface dislocation (BPD), which is detected by a potassium hydroxide (KOH) etching method, is less than 550 / cm < 2 > at both a seed crystal end and a domed end, and the density of substrate surface dislocation (PL-BPD), which is detected by a photoluminescence method, is less than 2000 / cm < 2 > at both the seed crystal end and the domed end.

This method for producing a recycled resin comprises, in order, a first treatment step in which a laminated resin film is treated with a treatment liquid 1 containing potassium hydroxide, an alcohol having 3 or less carbon atoms, and an amide-based solvent, and a second treatment step in which the laminated resin film is treated with a treatment liquid 2 containing an amide-based solvent. The laminated resin film includes an adhesive layer and a printing layer.

The present invention belongs to the technical field of phosphate binders and discloses a magnesium phosphate inorganic glue, its preparation method, and application. The magnesium phosphate inorganic glue is composed of the following components, measured by mass: 100 parts of dead-burned magnesium oxide, 45-80 parts of potassium dihydrogen phosphate, 1-5 parts of an organic acid metal chelating agent, 1-5 parts of potassium hydroxide, 1-4 parts of borax, 0.7-1.5 parts of calcium chloride hexahydrate, 0.4-0.6 parts of barium hydroxide octahydrate, and 20-32 parts of water. The magnesium phosphate inorganic glue is modified based on raw material selection and mix ratio design, thereby significantly improving the setting time and fluidity of the magnesium phosphate inorganic glue. This solves the problems of conventional magnesium phosphate inorganic glue, such as short setting time, poor fluidity, and inability to meet the construction requirements of the adhesive for fully impregnating and spreading carbon fiber cloth. This ensures the construction and workability of the magnesium phosphate inorganic glue as an adhesive for reinforcing carbon fiber cloth, and can be applied to the field of reinforcement and repair of large-scale concrete structures.

The invention relates to a method for preparing an aqueous zinc-iodine battery biochar positive electrode material from leather waste. The method comprises the following steps: pretreating the leather waste, and carrying out enzymolysis by using various proteases (alkaline protease, neutral protease and acid protease) under specific conditions; and then carrying out plasma treatment (adopting argon or oxygen as working gas, specific gas flow, specific power and specific treatment time) and activating treatment (adopting phosphoric acid or potassium hydroxide as an activating agent, specific activation temperature and specific activation time) to obtain the porous carbon with the specific surface area being greater than or equal to 1000m / g, the porosity being greater than or equal to 50%, the total pore volume being greater than or equal to 0.5 cm / g, the surface being rich in functional groups such as amino, carboxyl and hydroxyl and the like, and the pore volume being greater than or equal to 0.5 cm / g. The material contains an active biological carbon material doped with elements such as nitrogen, phosphorus and sulfur. The active biological carbon material provided by the invention can be used as an aqueous zinc-iodine battery positive electrode material, can effectively improve the utilization rate of iodine, and can enhance the charge-discharge efficiency, cycle stability and other performances of the battery. The preparation method is novel, leather waste is used as a raw material, the preparation method has the advantages of low cost, environmental protection and the like, accurate regulation and control of the active biological carbon material are realized through an enzymolysis-plasma-activation three-stage combination technology, and a new way is provided for preparation of the aqueous zinc-iodine battery positive electrode material.

The invention relates to the technical field of light building materials, in particular to durable sound insulation tile glue and a preparation method thereof. The durable sound-insulation tile adhesive is prepared from the following raw materials in parts by mass: 50 to 80 parts of sulphoaluminate cement, 10 to 30 parts of gypsum, 5 to 15 parts of fly ash, 5 to 10 parts of calcium oxide, 1 to 2 parts of calcium formate, 1 to 2 parts of potassium hydroxide, 1 to 5 parts of dispersible latex powder, 1 to 2 parts of wood fiber, 1 to 2 parts of polypropylene fiber, 5 to 15 parts of loaded bamboo powder, 5 to 12.8 parts of sodium silicate and 0.1 to 1 part of water-retaining agent. The durable sound-insulation ceramic tile adhesive is light in weight and good in sound insulation effect, excellent sound insulation performance can be obtained even if the adhesive is thinly coated by 4-8 mm, and meanwhile the ceramic tile adhesive is high in bonding strength and mechanical strength, simple in preparation method, simple and convenient in construction process and suitable for industrial large-scale production.

The invention relates to the field of high polymer materials, and particularly discloses a wear-resistant butyronitrile glove and a preparation method thereof. The glove is prepared from butyronitrile latex composite slurry, and the slurry comprises the following raw materials in parts by weight: 100 parts of butyronitrile latex; 0.6-1 part of a foamless wetting agent; 1.5 to 1.8 parts of potassium hydroxide; 1 to 1.5 parts of sulfur powder; 1-2 parts of zinc oxide; 0.3 to 0.5 part of a BZ accelerant; 0.3 to 0.5 part of an EZ accelerant; 1.5 to 2 parts of titanium dioxide; 0.05 to 0.1 part of a coloring agent; 0.8 to 1.2 parts of a wear-resistant filler; the wear-resistant filler comprises silicon oxide nanofibers, eggshell powder and lignin nanoparticles; and the balance of deionized water. The solid content is 14 to 14.5 percent. The preparation method comprises the following steps: preparing a coagulator and butyronitrile latex composite slurry; soaking in a coagulating agent; dipping for the first time; dipping for the second time; hemming, drying, cooling and demolding. The material has the advantage of excellent wear resistance.

The invention relates to the technical field of fine chemical engineering, and discloses a preparation process for producing potassium formate, which is characterized in that formic acid and potassium hydroxide are used as core reaction raw materials, and a potassium formate finished product is prepared through the steps of precise neutralization reaction, compound impurity removal, activated carbon deep decoloration, vacuum concentration, gradient cooling crystallization and vacuum drying. According to the method, the reaction pH value, the reaction temperature and the material ratio are regulated and controlled, the chelating impurity removal and low-temperature crystallization processes are combined, metal ions and organic impurities in the product are effectively removed, the problems that a traditional potassium formate preparation process is low in purity, poor in yield, low in production safety and insufficient in environmental protection property are solved, and the prepared potassium formate product is high in purity, excellent in water solubility and suitable for industrial production. The method can be widely applied to the fields of oilfield drilling, snow-melting agents, leather tanning, chemical intermediates and the like, and is suitable for large-scale industrial production.

The invention provides a GIS sulfur hexafluoride gas leakage detection color-changing adhesive tape and a preparation method thereof, and relates to the technical field of electrical equipment gas leakage detection.The GIS sulfur hexafluoride gas leakage detection color-changing adhesive tape comprises an adhesive tape body, a groove is formed in the top of the adhesive tape body, a carrier soaked with an alkaline solution is embedded in the groove, and the carrier soaked with the alkaline solution loads an indicator. The adhesive tape main body is a nano adhesive tape and has high adhesion and weather resistance. The indicator comprises any one of bromcresol purple, phenolphthalein and methyl orange, the alkaline solution comprises a potassium hydroxide solution or a bicarbonate solution, and the carrier is a porous fiber material or hydrogel. The SF6 leakage detection adhesive tape is low in cost and easy and convenient to operate, and leakage points are visually positioned through color changes.

The invention discloses a multi-surface flushing water tank structure used in a potassium hydroxide etching cleaning stage, and relates to the technical field of wafer etching cleaning, the multi-surface flushing water tank structure specifically comprises a cleaning box and a box door, one side of the cleaning box is provided with the box door, the cleaning box is internally provided with a rotary spraying cavity and a soaking cavity, and the cleaning box is internally provided with a telescopic control assembly; through the compact design of integrating a vertical soaking cavity and a transverse rotary spray-washing cavity, and in combination with automatic cooperation of an overturning placement mechanism and a telescopic control assembly, efficient posture switching from vertical soaking to horizontal washing of the wafer is achieved, in a dynamic washing mechanism, the wafer is driven to rotate through the linkage effect of a strip-shaped conveying assembly and a swing spray head, and therefore the wafer can be fully washed. And in cooperation with multi-angle spraying, a surface residue cleaning blind area is thoroughly eliminated.

The utility model discloses a blanking trolley convenient for potassium hydroxide storage tank transportation, and relates to the technical field of chemical equipment transportation, the blanking trolley comprises a bottom plate and a storage tank, the bottom plate is provided with a fixing assembly capable of accommodating the storage tank, the fixing assembly comprises U-shaped seats, the number of the U-shaped seats is not less than three, and the U-shaped seats are arranged on the bottom plate. The circular arrays are mounted on the top surface of the bottom plate; the clamping part is arranged on the U-shaped seat, the clamping part comprises a supporting rod, one side of the supporting rod is fixedly connected with a transverse rod, and the intersection of the supporting rod and the transverse rod is rotationally arranged on the inner side of the U-shaped seat. According to the discharging trolley facilitating transportation of the potassium hydroxide storage tank, after the bottom end of the storage tank makes contact with a roller of a clamping part, under the action of the gravity of the storage tank, a supporting rod drives a transverse rod to tilt, so that vertical rods are gathered towards the inner side, a fixing rod abuts against the outer wall of the storage tank, the side wall of the storage tank can be supported in different directions, and shaking of the storage tank during transportation is avoided; and potential safety hazards are reduced.

When potassium hydroxide (KOH) or other activating agents are used to activate carbon, the hydrochloric acid used to remove it may damage the stainless steel equipment used in the process. Herein, water and citric acid are used to wash the carbon after its activation to reduce damage to the equipment. Prior to activation, a slurry of coal, petroleum coke or other carbonaceous material mixed with water and KOH is dried in layers. During drying, the KOH repeatedly precipitates as a crust on the layers and is repeatedly blended back into the mixture. Activation temperature and duration may be selected to control the pore size distribution in the activated carbon.

The invention provides a high-strength adhesive admixture exciting agent, and relates to the field of high-strength adhesive admixture exciting agents. The invention provides a high-strength adhesive admixture excitant, the cement comprises the following components in parts by mass: a concrete admixture, a chemical excitant and a physical excitant, the chemical excitant is one or a mixture of two of an alkaline excitant or a sulfate excitant, and the physical excitant is one or a mixture of two of the alkaline excitant and the sulfate excitant. The alkali activator is one or a mixture of more than two of sodium hydroxide, potassium hydroxide or water glass, the composite admixture has multiple functions, the function is enhanced, the stability of a cementing material and the working performance of concrete are improved, the raw materials are low in cost and easy to obtain, and the composite admixture is suitable for large-scale popularization and application. The pressure of the high-strength concrete on the supply of the silica fume and the superfine slag powder is relieved, the efficiency of the steel slag or the fly ash as the admixture is improved, the requirement of sustainable development is met, the hydration reaction efficiency of the admixture can be remarkably improved, and therefore the mechanical property and durability of the material are enhanced.

The concrete surface of the water collecting pipeline is filled with the section repairing mortar composition for the water collecting pipeline for repairing; the composition is prepared by mixing 30 to 50 parts by weight of Portland cement, 10 to 20 parts by weight of alumina cement, 24 to 45 parts by weight of a calcium hydroxide binding material composed of blast furnace slag, 30 to 45 parts by weight of silicon oxide (SIO2), 0.5 to 1.0 part by weight of polymer resin, 4 to 33 parts by weight of potassium hydroxide (KOH), 0.1 to 3 parts by weight of silica fume, 0.1 to 3 parts by weight of an antifoaming agent and 5 to 10 parts by weight of silica aerogel. Thus, permeation of harmful components, carbon dioxide, moisture, and the like, which cause deterioration in durability of the concrete for the water collection duct, is prevented, the compressive strength, bending strength, and adhesive strength of the concrete for the water collection duct are improved, and the chemical resistance, impact resistance, and pollution resistance of the concrete for the water collection duct are improved.

The invention relates to a cleaning article (2) for a rotisserie oven and a method for producing the same, and to an assembly comprising a rotisserie oven and one or more cleaning articles. The cleaning article comprises a first cleaning component (4), a second cleaning component (6) and a water-soluble film (8) that encloses the first and second cleaning components. The first cleaning component comprises a first cleaning agent (4a). The first cleaning agent is provided as a powder and comprises enzymes. The second cleaning component comprises a second cleaning agent (6a) and a meltable coating (6b) that seals the second cleaning agent. The second cleaning agent comprises at least one of the group consisting of: sodium hydroxide (NaOH) and potassium hydroxide (KOH).

The invention relates to the field of aerogel fibers, and discloses a yarn reinforced nano aramid fiber composite aerogel fiber and a preparation method thereof, the composite aerogel fiber comprises aramid fiber 1313 yarn and an aerogel layer wrapping the aramid fiber 1313 yarn; the aerogel layer is prepared from aramid 1313 chopped fibers, a dimethyl sulfoxide solvent, potassium hydroxide, modified nano zinc oxide, absolute ethyl alcohol, deionized water and acetic acid; the modified nano zinc oxide is prepared from nano zinc oxide, an ethanol water solution, gamma-aminopropyltriethoxysilane and acetic acid. The aerogel fiber disclosed by the invention has relatively good mechanical properties and antibacterial properties.

The invention relates to environment-friendly water-based anticorrosive paint and a preparation process thereof, and belongs to the technical field of environment-friendly water-based anticorrosive paint.The environment-friendly water-based anticorrosive paint is prepared from, by weight, 60-80 parts of water-based resin, 8-14 parts of anti-indentation agent, 7-16 parts of preservative, 6-8 parts of titanium dioxide and 7-9 parts of mica powder; wherein the preservative is prepared from the following raw materials in parts by weight: 10 to 15 parts of an anti-corrosion agent and 6 to 17 parts of an anti-adhesion agent. The anti-corrosion agent prepared by matching the short carbon fibers and the flax fibers plays an effective anti-corrosion role, and the anti-adhesion agent prepared by matching the butane sulfonic acid, the tartaric acid, the potassium hydroxide and the oil mixture plays a role in effectively preventing sludge from being adhered to the paint surface, so that the situation that corrosive liquid remains on the sludge and continues to corrode the paint surface is reduced as much as possible, and the paint surface is protected. The environment-friendly water-based anti-corrosion paint prepared by matching the anti-corrosion agent and the anti-adhesion agent has good anti-corrosion capability.