109 results about "Ammonium peroxydisulfate" patented technology

A polishing composition for a memory hard disk, which comprises the following components (a) to (d):(a) from 0.1 to 50 wt %, based on the total amount of the polishing composition, of at least one abrasive selected from the group consisting of silicon dioxide, aluminum oxide, cerium oxide, zirconium oxide, titanium oxide, silicon nitride and manganese dioxide,(b) from 0.001 to 10 wt %, based on the total amount of the polishing composition, of at least one iron salt selected from the group consisting of iron nitrate, iron sulfate, ammonium iron sulfate, iron perchlorate, iron chloride, iron citrate, ammonium iron titrate, iron oxalate, ammonium iron oxalate and an iron chelate complex salt of ethylenediaminetetraacetic acid,(c) from 0.01 to 30 wt %, based on the total amount of the polishing composition, of at least one peroxydisulfate salt selected from the group consisting of ammonium peroxydisulfate, potassium peroxydisulfate and sodium peroxydisulfate, and(d) water.

The present invention relates to a molecular imprinting resin, its preparation and application for separation and purification of protein. Its aperture is 2-3 micrometers, and it is prepared by using acrylamide as monomer, using grafts of low molecular weight polyethanol as auxiliary identification chain, using bovine serum albumin as template, using N,N-methylenebisacrylamide as cross-linking agent, using acrylic ester macroporous resin spheres as carrier in phosphate baffer system and using ammonium peroxydisulfate-sodium sulfite oxidation reduction system as initiator through cross-linking polymerization for 4-6 h. at 4-10 deg.C.

The invention relates to a preparation method of a silver-ion absorbent, and an application of the silver-ion absorbent, belonging to the field of industrial waste water treatment. The preparation method for composite material of sulfonated graphene/polypyrrole comprises the following steps that 1) sulfonated grapheme is prepared via a chemical oxidization method by utilizing natural graphite; 2) the sulfonated grapheme is dispersed and dissolved in water, and pyrrol is added to obtain solution A, wherein the concentration of the sulfonated grapheme is 0.5-1.5mg/mL, and the concentration of the pyrrol is 0.05-0.2mol/L; 3) ammonium peroxydisulfate is dissolved in water, a mole ratio of the ammonium peroxydisulfate to the pyrrol is 0.5:1 to 2:1, and aqueous solution of the ammonium peroxydisulfate is obtained; 4) the aqueous solution of the ammonium peroxydisulfate is added into the solution A, and is mixed for a reaction for 12-36 hours; and 5) the obtained product in the step 4) is filtered and washed until the filter liquor is colorless, and the composite material of the sulfonated graphene/polypyrrole is obtained after the filter liquor is dried by vacuum baking. The composite material of the sulfonated graphene/polypyrrole has a remarkable absorbing and recycling performance for silver ions.

The invention discloses a preparation method a ferriferrous oxide-polyaniline-gold nano composite material. According to the preparation method, nano Fe3O4 is synthesized via solvothermal method, and is taken as the core of the composite material; Fe3O4 is uniformly dispersed into a PVP aqueous solution; aniline monomer, citric acid, and initiator ammonium peroxydisulfate are added respectively under ice bath and continuous stirring so as to form polyaniline on the surface of nano Fe3O4 from aniline via polymerization, and obtain a Fe3O4-PANI core-shell structure composite material; assembling of prepared gold nanosol with Fe3O4-PANI is realized via electrostatic attraction; and finally seed-mediated growth is adopted, and gold shell is prepared from gold seed with methanol and a reductive gold salt solution so as to obtain the ferriferrous oxide-polyaniline-gold nano composite material. The preparation method of ferriferrous oxide-polyaniline-gold nano composite material is low in cost, simple in technology, and excellent in performance; and the ferriferrous oxide-polyaniline-gold nano composite material is sensitive and rapid, and can be recycled in catalyzing pollutant p-nitrophenol.

The invention relates to a preparation method of a polydopamine modified basalt fiber carrier and belongs to the technical field of inorganic fiber material modification and the field of wastewater treatment. The preparation method specifically includes the steps of 1), alkali etch, namely immersing a basalt fiber bundle washed with an acetone solution in a NaOH solution for etching, washing the basalt fiber bundle with deionized water for multiple times after removal, and drying the basalt fiber bundle for standby use; 2), preparation of a Tris-HCl buffer solution, namely adjusting the pH value to 8.0-8.5; 3), preparation of a dopamine modified solution, namely dissolving the dopamine modified solution and ammonium peroxydisulfate in the Tris-HCl buffer solution to obtain 2-4mg/mL of the dopamine modified solution; 4), immersing etched and dried basalt fibers in the dopamine modified solution and placing the basalt fibers on a vibrating table at room temperature, and taking out the basalt fibers for drying after vibration. The preparation method has the advantages of simple process, convenient operation and green environmental friendliness; abundant surface functional groups and good biocompatibility and hydrophilicity are achieved, the adhesive of microorganisms on the surface is promoted, the amount of film hanging is increased, and the efficiency of sewage/wastewater treatment is improved.

The invention relates to a modification method for improving the salt tolerance of a crylic acid macromolecule absorbent resin. The modification method which utilizes Alpha-cyclodextrin to improve the salt tolerance of the crylic acid macromolecule absorbent resin is characterized by comprising the following steps: 1) according to the parts of all component raw materials by weight as follows: 15 portions to 40 portions of crylic acid, 5 portions to 18 portions of sodium hydroxide, 0.02 portion to 1 portion of N, N'- methylene bisacrylamide, 0.05 portion to 2 portions of Alpha-cyclodextrin, 0.04 portion to 2 portions of ammonium peroxydisulfate and 15 portions to 54 portions of water, the raw materials are selected; 2) all raw materials are added into a reaction kettle with a water bath, the temperature is risen to 65 DEG C to 80 DEG C and the reaction lasts for 1 hour to 3 hours; 3) stirring in the reaction kettle is stopped and the kettle is allowed to stand for 0.5 hour to 2 hours and reaction mass in the reaction kettle is discharged; and 4) after being dried, the reaction mass is crushed, thus obtaining the modified crylic acid macromolecule absorbent resin. The method can evidently improve the salt tolerance of the crylic acid macromolecule absorbent resin prepared by the method can be evidently improved.

The invention relates to the making of 3DOM. It is made through synthesizing polymethyl methacryate or polystyrene pattern lumber, using Li and Mn front drive solution to stuff glue crystalline, through two sections of constant temperature baking to get 3DOM, using acid or peroxy-disulfate to perform acid etch. The result is that the product is the low density material in small blocks, unnecessary to add adhesive with high adhesive feature, using ammonium peroxy-disulfate to remove Li, reduced in Mn ion damage, improved adhesive feature, showing three dimensional porous frame structure, significantly improved in drive power inside the screen and the outside surface of the micro hole adhesive, being a dual hole channel with both macro and micro holes.

A quenching medium as cooling medium for vehicle steering node quenching heat treatment and quenching method are disclosed. The quenching medium consists of polyvinyl alcohol, polyacrylic acid salt, ammonium peroxydisulfate and water by proportion through heating polymerizing, cooling and obtaining quenching medium stoste. Heating steering node to austenite state when using, and diluting original solution into different one hundred percent concentration by size, shape and hardening ability of steering node for process of steering node single-phase , stage or double fluid quenching. It is effective for steering node phi<70mm and fatigue life of steering life reaches or above to 500000 times.

The invention provides an insulating coating. The insulating coating is obtained by mixing evenly a raw material mixture; the raw material mixture contains a dihydric phosphate, an oxidizing agent, a silane coupling agent, an acid, a water soluble silicate and water; the oxidizing agent is at least one of sodium perchlorate, potassium permanganate, hydrogen peroxide, sodium chlorate, sodium nitrite, zinc nitrate, sodium persulfate, sodium bromate, ammonium peroxydisulfate, sodium molybdate and cobalt nitrate. The invention also provides an electrical steel material. The invention also provides a preparation method of the electrical steel material. The invention further provides the electrical steel material obtained according to the preparation method of the electrical steel material. The insulating coating after curing has good heat resistance, insulativity, adhesiveness, corrosion resistance, punching and shearing processability and other properties.

The invention discloses a preparation method of a zinc-series metal treatment fluid, and also discloses a using method of the zinc-series metal treatment fluid. The zinc-series metal treatment fluid comprises the following raw materials in parts by weight: 80-150 parts of zinc dihydrogen phosphate, 20-40 parts of zinc oxide, 15-40 parts of a phosphoric acid and nitric acid mixed solution, 10-30 parts of calcium nitrate, 2-5 parts of manganese carbonate, 2-4 parts of sodium fluorosilicate, 1-4 parts of hydroxylamine sulphate, 3-6 parts of a triazole compound, 2-3 parts of sodium citrate, 5-15 parts of a polyphosphate, 1-3 parts of sodium fluoride, 1-2 parts of ammonium peroxydisulfate, 5-10 parts of sodium molybdate, 1-3 parts of hexamethylenetetramine, 3-5 parts of sodium trimetaphosphate, and 2-4 parts of nickel sulfate.

A novel method for producing a meta type polyaniline, comprising polymerizing aniline in at least one organic solvent selected from N-methyl-2-pyrrolidone, N,N-dimethyl sulfoxide, N,N-dimethylacetamide and N,N-dimethylformamide, in the presence of at least one oxidizing agent selected from ammonium peroxodisulfate, iron(III) chloride, manganese dioxide and hydrogen peroxide, at -20° C. to 50° C.

The invention discloses a preparation method of a high-heat-conductivity graphite radiating fin. Natural flake graphite is used as a raw material, ammonium peroxydisulfate is used as an oxidant, nitric acid phosphoric anhydride are used as intercalators, and a small amount of oxalic acid is used as a reducer to prepare low-sulfur highly-expanded graphite; and a water washing method and an expansion method are improved to finally prepare the high-heat-conductivity graphite radiating fin, wherein the sulfur content of the prepared expanded graphite is less than 1%. The method has the advantages of simple preparation technique, mild reaction conditions, small environmental pollution, accessible raw materials, low cost and the like, and is easy to master and convenient for popularization.

Methods for preparing oxidizing agents having enhanced water solubility properties, such as magnesium permanganate, calcium permanganate and ammonium peroxydisulfate are prepared from oxidizing agents having more limited water solubility properties, such as potassium permanganate and potassium peroxydisulfate by electrochemical means employing oxidant stable, cationic permselective ion-exchange membranes that are also suitable for transporting a preponderance of cations with lower water of hydration, such as potassium over other more highly hydrated cations, such as sodium, magnesium and calcium used to replace the leaving potassium ion, and form more soluble oxidizer salt solutions. The methods may be practiced in multi-compartmentalized electrolytic cells, such as metathesis electrodialysis cells. The methods of the invention are also more attractive economically over previous technologies by simultaneously generating a value-added co-product without costly reagents, while avoiding the disposal of unwanted waste by-products, and the like.

The present invention provides an excellent etching solution capable of not only integrally etching metal laminated films composed mainly of molybdenum-based metal and aluminum-based metal, but also controlling side etching amount of each film, through which the cone angle is controlled within the range of 20-70 degree. Said etching solution capable of etching laminated films of molybdenum-based metal film and aluminum-based metal film forming at insulating film base plates contains sulfonic acid compounds, phosphoric acids and nitric acids, wherein said sulfonic acid compounds are selected from the group of sulphuric acid, ammonium sulfate, sodium sulfate, potassium sulfate, ammonium bisulfate, sodium bisulfate, potassium bisulfate, calcium sulfate, ammonium ceric sulfate, ferric sulfate, copper sulfate, magnesium sulfate, lead sulfate, hydroxyl ammonium sulfate, acylamide sulfate, acylamide ammonium sulfate, ammonium persulphate, ethylenediamine sulfates, aniline sulfates and adenine sulfates.

The invention relates to an analysis method of chromium in a chromium vanadium hydrogen storage alloy, and belongs to the field of analytical chemistry. The invention solves the technical problem by providing a simple rapid accurate and direct analysis method for determining chromium content in the chromium vanadium hydrogen storage alloy. The method includes the steps of: A, dissolution of sample: dissolving a vanadium chromium hydrogen storage alloy sample with sulfuric acid and nitric acid, and adding water to a constant volume to obtain a sample solution; B, oxidation: adding ammonium peroxydisulfate into the sample solution under certain acidity, oxidizing vanadium and chromium under the catalysis of silver nitrate; C, vanadium color masking; D, spectrophotometric determination and calculation of chromium content: determining the absorbance of chromium by a spectrophotometric method, and calculating the chromium content according to the absorbance. The method does not require a color developing agent in the spectrophotometric determination, uses the natural color of chrome, and masks the color of vanadium by adjusting the pH value, so as to eliminate the interference of vanadium on the determination of chromium; and the spectrophotometric method can directly measure the content of chromium in the chromium vanadium hydrogen storage alloy.

The invention discloses a graphene-based aerogel electrode material containing sepiolite for corrosion prevention and a preparation method of the aerogel electrode material. The graphene-based aerogel electrode material containing sepiolite for corrosion prevention is characterized by preparing from the following raw materials: 2-3 of sepiolite, 10-20 of graphene oxide, 10-20 of glucose, 1-2 of sodium dodecyl sulfate, 20-30 of ZnCl2 solution, 30-40 of KMnO4, 80-100 of ethyl alcohol, 2-4 of acrylic emulsion, 3-5 of silane coupling agent KH560, 20-30 of pyrrole, 35-45 of p-toluenesulfonic acid, 35-40 of ammonium peroxydisulfate solution and 500-1,000 of distilled water. The attachment of manganese dioxide onto a surface of aerogel is facilitated after the aerogel is activated by ZnCl2, meanwhile, a dual-electrical layer capacitor and a Faraday capacitor can be combined by the attachment of manganese dioxide, the specific capacitance of a supercapacitor can be improved, the electrical conductivity of the manganese dioxide and the impregnation capability of an electrolyte can be also improved, and the cycle performance of the electrolyte is improved; and with the addition of the sepiolite in a matching way, the material is endowed with a corrosion prevention function.

The invention discloses a polypropylene conductive plastic and a preparation method thereof. The polypropylene conductive plastic comprises the following components in parts by weight: 40-50 parts of PP, 30-40 parts of carbon black, 20-25 parts of PP-g-MAH, 8-10 parts of ethylene-propylene rubber, 10-15 parts of powdered aluminum, 1-15 parts of titanium tetrabutoxide, 5-9 parts of dioctyl terephthalate, 5-6 parts of sodium sulfite, 10-19 parts of ammonium persulfate, 12-18 parts of diisobutyl phthalate, and 11-17 parts of isoeugenol. The polypropylene conductive plastic of the present invention has very good mechanical properties, high impact strength and relatively low shrinkage, good stability and no proneness of deformation; and also has good conductivity, so the plastic can be widely used in anti-electromagnetic interference products, etc., and can be used to replace metal materials, wherein superior performance and lower cost can be achieved.

The invention discloses water-absorbing resin dry glue powder and application thereof in demulsification of oil-water emulsion. The dry glue powder is prepared from the following raw materials in percentage by weight: 10-40% of acrylic acid, 5-20% of sodium hydroxide, 0.5-8% of N-methylolacrylamide, 0.5-5% of ammonium peroxydisulfate, 0.5-2% of sodium sulfite and the balance being water; all the raw materials, except acrylic acid, are prepared into a water solution, a sodium hydroxide water solution reacts with acrylic acid, the neutralization degree is controlled to be 60-85%, then the solution of N-methylolacrylamide, ammonium peroxydisulfate and sodium sulfite is added to react at the temperature of 50-80 DEG C to produce hydrogel; and the hydrogel is cut into small pieces and dried ina drying oven, and the dried hydrogel pieces are smashed into the water-absorbing resin dry glue powder. The water-absorbing resin dry glue powder is added in emulsion and can spontaneously absorb water to expand through mechanical stirring so as to dehydrate the emulsion and realize demulsification. The water-absorbing resin dry glue powder is simple to prepare and easy for industrial production; dehydration and demulsification operations are convenient to implement and have low equipment requirement; and a water-absorbing material has high dehydration capability and is easy to separate and recycle, and can be recycled.

The invention relates to a modification method for improving the salt tolerance of a crylic acid macromolecule absorbent resin. The modification method for improving the salt tolerance of the crylic acid macromolecule absorbent resin is characterized by comprising the following steps: 1) according to the parts of all component raw materials by weight as follows: 90 portions to 140 portions of n-hexane, 30 portions to 50 portions of coconut oil diethanolamide, 20 portions to 40 portions of crylic acid, 5 portions to 12 portions of sodium hydroxide, 3 portions to 15 portions of calcium chloride, 0.03 portion to 1 portion of N, N'- methylene bisacrylamide, 0.05 portion to 1 portion of ammonium peroxydisulfate and 32 portions to 100 portions of water, raw materials are selected; 2) water is respectively mixed with the sodium hydroxide and the calcium chloride so as to obtain sodium hydroxide solution and calcium chloride solution; and 3) all raw materials are added into a reaction kettle with a water bath, the water bath temperature is risen to 70 DEG C to 80 DEG C, the raw materials are stirred for 4 hours to 6 hours at the temperature for reaction, finally a reaction product is taken out; and after being dried, the reaction product is the modified crylic acid macromolecule absorbent resin. The method can evidently improve the salt tolerance of the crylic acid macromolecule absorbent resin and has low production cost.

The disclosure provides a cushion including an outer cover defining an interior cavity, and inner filler material disposed within the interior cavity. The inner filler material may comprise at least one molded block of polyurethane foam. The outer cover and/or the inner filler material may be porous to at least water. The cushion further includes a waterproof coating to the outer surface the inner filler material and forming waterproof seal extending entirely thereabout after curing. The waterproof coating comprises butyl acrylate within the range of 17-32 wt %, styrene within the range of 13-26 wt %, and deionized water within the range of 42-70 wt % prior to curing. The waterproof coating may further include auxiliary components within the range of 0.5-8 wt % prior to curing. The auxiliary components may include acrylic acid, sodium lauryl sulfate, an emulsifier component, ammonium peroxydisulfate, sodium bicarbonate, sodium phosphate, tertiary and tributyl phosphate.

The invention discloses a nickel-cobalt-sulfur hollow sphere used as a lithium-sulfur battery positive electrode, and a preparation method thereof and an application thereof in the preparation of a lithium-sulfur battery. The preparation method comprises the following steps: dissolving cobalt nitrate hexahydrate, nickel nitrate hexahydrate, potassium peroxydisulfate or ammonium peroxodisulfate, ammonium fluoride and sodium acetate in deionized water, performing stirring, adding a nano-silica sphere, and performing ultrasonic dispersion; heating and reacting the obtained suspension, washing theobtained reaction product, and drying the washed reaction product; and adding obtained precursor powder to deionized water, performing ultrasonic dispersion, adding sodium sulfide nonahydrate to theobtained dispersion, heating and reacting the obtained mixed solution, washing the obtained reaction product, and drying the washed reaction product to obtain black nickel-cobalt-sulfur nano-hollow sphere powder. A nickel-cobalt-sulfur nano-particle prepared by using the nickel-cobalt-sulfur hollow nano-sphere prepared through a simple hydrothermal technology in a one-step manner as a sulfur fixing material has a good prospect as a lithium-sulfur battery positive electrode supporting material, and improves the cycle performances of the lithium-sulfur battery. The preparation method has the advantages of simplicity, easiness in operation, safety, environmental protection, low cost, and suitableness for large-scale production.

The invention discloses a water soluble nano-polysilicon/polymer gel oil-displacing-agent. The water soluble nano-polysilicon/polymer gel oil-displacing-agent mainly comprises, by weight, 2-5 parts of 2-acrylamide-2-methylpro panesulfonic acid, 5-8 parts of acrylamide, 0.2-0.5 part of sodium dodecylsulphate, 0.01-0.50 part of reactive nano-polysilicon RNS-D, 0.05-0.25 part of ammonium peroxydisulfate and 70-110 parts of deionized water. The water soluble nano-polysilicon/polymer gel oil-displacing-agent has a good rheological property, good temperature resistant and anti-shear properties, can play the function of enlarging a sweep volume in an oil deposit, and improving a mobility ratio. The water soluble nano-polysilicon/polymer gel oil-displacing-agent can greatly enhance the recovery ratio.

The invention relates to a micro-hair conductive bamboo fiber yarn fabrics, which is made by weaving cotton fiber yarn (1) as warp and bamboo fiber yarn (2) as weft. <{EN2}>A lining fabrics layer is composited at the back side of the bamboo fiber yarn fabrics; the lining fabrics layer is a micro-hair conductive fabrics, and comprises a fabrics that dipped with conductive polyaniline polymer provided by in-situ chemical polymerization between aniline and oxidizing agent ammonium peroxydisulfate in an acidic medium. <{EN3}>The advantages are that the transparency and permeability are good; health care functions like ultraviolet resistance, natural antibiosis, bacteriostasis, mite-removing and stinking-proof are provided; and touch feeling is especially good. <{EN4}>The micro-hair is conductive.