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9 results about "Disodium hydrogen phosphate" patented technology

Magnesium alloy surface zinc-calcium series phosphating solution and conversion treatment process thereof

The invention discloses magnesium alloy surface zinc-calcium series phosphating solution and a conversion treatment process thereof; the magnesium alloy surface phosphating solution is aqueous solution formed by the following constituents, namely, every liter solution contains: 10-30g of disodium hydrogen phosphate, 4-6g of zinc nitrate, 2-4g of sodium nitrite, s0.5-2g of sodium fluoride, and 0.-2g of calcium nitrate; the process for carrying out surface conversion treatment to the phosphating solution comprises the following process flows: alkaline washing and degreasing->rinsing->acidity activation->rinsing->surface activation->rinsing->phosphating->rinsing->drying; the working temperature is 40-70 DEG C, and the time is 5-60 minutes. The conversion treatment process can obtain phosphateconversion coating on the surface of the magnesium alloy, wherein the conversion coating has good protectiveness, is fine and uniform and stable, and has strong adhesive force, and can improve the corrosion-resisting property of magnesium alloy parts; the conversion treatment process is stable and easy to control, and has low cost.
Owner:CHONGQING UNIV OF TECH

Novel gypsum retarder and preparation method thereof

ActiveCN102701638ALow costGood retarding effectCalciumDisodium hydrogen phosphate
The invention relates to a novel gypsum retarder and a preparation method thereof. The novel gypsum retarder consists of the following components in parts by weight: 150-180 parts of penicillin mycelium, 0.2-0.4 part of disodium hydrogen phosphate, 0.3-0.6 part of sodium hydroxide, 0.05-0.08 part of polydimethylsiloxane, 0.04-0.06 part of potassium sorbate, 10-20 parts of alkaline calcium bentonite, 0.01-0.03 part of beta-phenethyl alcohol and 350-450 parts of water. Modification condition: modification is performed at the temperature of 40-50 DEG C for 3-5 hours; and a modified material is prepared into a solid gypsum retarder by spray drying. The retarder has the characteristics of low cost, good retarding effect and small strength loss.
Owner:邯郸市潘仁新能源科技有限公司

Environment-friendly ceramic coating material for water faucet

InactiveCN106189561ACorrosion resistantWear-resistantAnti-corrosive paintsCarbon fibersPolybutylene terephthalate
The invention discloses an environment-friendly ceramic coating material for a water faucet. The environment-friendly ceramic coating material for the water faucet is prepared according to a formula comprising the following raw material components in percentage by mass: 80-100 parts of fluorocarbon resin, 8-10 parts of organosilicone oil, 3-5 parts of naphtha, 6-8 parts of polydimethylsiloxane, 10-12 parts of absolute ethyl alcohol, 5-8 parts of alkylphenol polyoxyethylene, 6-8 parts of castor oil polyethenoxy ether, 30-35 parts of an acrylic resin emulsion, 6-8 parts of a nano graphene oxide solution, 10-12 parts of perfluoropolyether, 5-6 parts of sodium chloride, 6-8 parts of disodium hydrogen phosphate, 5-6 parts of aluminum oxide, 6-10 parts of glass fiber powder, 5-8 parts of zinc powder, 6-8 parts of copper powder, 8-10 parts of carbon fiber powder, 8-10 parts of polybutylene terephthalate, 6-8 parts of calcium stearate, 5-8 parts of zinc stearate, 7-9 parts of sodium methyl silicate, 3-5 parts of isobutyl isobutyrate, 6-8 parts of ethlene bisstearamide and 8-10 parts of diethylene glycol monobutyl ether. The environment-friendly ceramic coating material for the water faucet has the advantages of corrosion resistance, wear resistance, high adhesive force, bright and clean appearance and compact coating structure.
Owner:朱燕华

Method for preparing mercury-free ammonium detection test paper

InactiveCN101887055AEasy to makeEasy to carryAnalysis using chemical indicatorsNitrosoSodium phosphates
The invention relates to a method for preparing mercury-free ammonium detection test paper, and belongs to the field of analytical chemistry. Based on filter paper of 1 square centimeter, the ammonium test paper consists of 0.5 to 5.6 milligrams of soaked phenol, 0 to 0.1 milligram of sodium nitroprusside, 0.35 to 4.5 milligrams of disodium hydrogen phosphate, 3.0 to 10 milligrams of sodium phosphate, 0.3 to 4.6 milligrams of sodium hypochlorite and 0.15 to 0.5 milligram of sodium hydroxide. The reagent content of the ammonium test paper is only one percent of that in other ammonium ion test methods. The test paper of the invention has the advantages of simple manufacturing, convenience to carry, simple, convenient and rapid operation, vivid detection, high selectivity and capability of judging the ammonium ion content of a sample by visually comparing the color of the developing test paper with that of a standard color card. Reagents used by the method are ordinary chemical reagents which are non-toxic, safe and reliable and can be used for testing the ammonium content of various nitrogen fertilizers, soil, crop hydroponics nutrient solution, different kinds of ammonium-containing solution and sewage.
Owner:UNIV OF JINAN

Novel sewage treatment agent and preparation method thereof

The invention belongs to the field of sewage treatment and discloses a novel sewage treatment agent and a preparation method thereof. The novel sewage treatment agent is prepared from, by weight, 4-10 parts of coal ash, 4-10 parts of sodium silicide, 4-10 parts of sodium polyacrylate, 5-10 parts of polymeric iron phosphate, 2-6 parts of adsorption substances, 3-9 parts of polymeric aluminum calcium chloride, 4-10 parts of ammonium persulfate, 3-9 parts of disodium hydrogen phosphate, 4-12 parts of zeolite and 80-100 parts of water. The novel sewage treatment agent is wide in pollutant treatment range, effective, extensive in material source, low in cost and widely applicable to treatment of municipal sewage and various types of industrial wastewater and treatment of polluted water of rivers and lakes, and treated water can be recycled.
Owner:GUILIN CHUNXIAO ENVIRONMENTAL PROTECTION TECH CO LTD

Preparation method of anti-mildew agent for feeds

InactiveCN108371238AIncrease feed intakePromotes decreased feed intake, growthAccessory food factorsFreeze-dryingFiltration
The invention discloses a preparation method of an anti-mildew agent for feeds, and belongs to the technical field of feed additives. The preparation method of the anti-mildew agent for feeds comprises the following steps of ball-milling vermiculite, water and betaine so as to obtain a ball-milled material; performing ultrasonic oscillation on the ball-milled material, a hydrochloric acid solutionand cysteine sulfonate, and carrying out freeze-drying so as to obtain a dried material; carrying out fermentation by using distilled water, the dried material, glucose, a yeast extract, edible maggot, fungus powder, disodium hydrogen phosphate and sodium dihydrogen phosphate, and carrying out drying, crushing and sieving so as to obtain sieved granules; putting acetone, ethanol, the sieved granules, diacylglycerol and an additive into a reactor, discharging gas by using trimethylamine, adding an catalyst, carrying out heated stirring, carrying out cooling to room temperature, and carrying out standing; after standing, discharging materials, carrying out filtration, conducting washing by using petroleum ether, diethyl ether, acetone and ethanol, and carrying out drying so as to obtain a dried material; grinding the dried material, a nutrient supplement agent and sodium humate, and collecting the ground material so as obtain the anti-mildew agent for feeds. The anti-mildew agent for feeds solves the problems of the existing anti-mildew agents for feeds, namely liable causing of anorexia and refusal to eat, and slow growth caused by reduced feed intake caused by abdominal fullness of livestock after eating the existing anti-mildew agents for feeds.
Owner:汪逸凡

Preparation method of composite efficient coagulant for treatment of textile printing and dyeing wastewater

InactiveCN110980909AEasy to reuseReduce processing costsWater treatment parameter controlWaste water treatment from textile industryTextile printerDyeing wastewater
The invention provides a preparation method of a composite efficient coagulant for treatment of textile printing and dyeing wastewater, belonging to the technical field of wastewater treatment. The preparation method comprises the following steps: roasting fly ash, carrying out secondary acid leaching extraction, performing filtering, collecting filtrates, and combining the filtrates for later use; dissolving sodium silicate in a certain amount of deionized water, adjusting a pH value with hydrochloric acid, carrying out a reaction for 3-6 h, dropwise adding the filtrate and a cerium oxide solution, carrying out a stirring reaction for 10-15 min, adding chitosan, carrying out a reaction for 5-10 min, adjusting the pH value with sodium hydroxide, and carrying out a stirring reaction for 3-6h; adding disodium hydrogen phosphate into the reaction solution, and then carrying out stirring and heating to 40-50 DEG C; then, adding polydimethyldiallyl ammonium chloride and starch modified polyacrylamide, continuing stirring for a reaction for 1-2 h, performing standing, and carrying out curing for 20-25 h. According to the invention, a variety of coagulation components are matched with one another, so the composite efficient coagulant has good treatment effect on textile printing and dyeing wastewater, wherein the removal rate of COD achieves 94%, and the removal rate of TOC achieves97.9%; and the composite efficient coagulant has outstanding charge neutralization ability.
Owner:安徽子延科技有限公司
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