39 results about "EDTMP" patented technology

The invention discloses a chromate-free passivation agent for an aluminum alloy. Per liter of chromate-free passivation agent is composed of, by mass, 10 mg to 300 mg of amino silane or/and epoxy silane, 1 mg-100 mg of dispersible nano particles, 10 mg-500 mg of a zirconium compound or/and a titanium compound, 1 mg-150 mg of metal ions, 10 mg-150 mg of fluoride, 1 mg-20 mg of a complexing agent, 75 mg-100 mg of organic phosphoric acid and the balance water; and the organic phosphoric acid is at least two of HEDP, HPMA, EDTMP, DTPMP, ATMP and PBTCA. According to the passivation agent, multiple kinds of organic phosphoric acid, multiple kinds of metal ions and multiple kinds of nano particles are chelated to the different degrees; on one aspect, the thickness and the compactness of a passivation film layer can be strengthened; and meanwhile, the passivation film layer (inorganic film layer) formed after chelation can show a color to a certain degree on the surface of the aluminum alloy.

The invention discloses an aerated brick with an anti-freezing function. The aerated brick is characterized by being prepared from the following raw materials in parts by weight: 20-25 parts of lead-zinc tailing powder, 17-19 parts of household garbage, 11-14 parts of lime, 0.2-0.5 part of aluminum powder, 5-7 parts of phosphate cement, 10-13 parts of natural yellow sand, 2-4 parts of potassium sulfate, 1-4 parts of EDTMP.Na5, 2-5 parts of ammonium bicarbonate, 0.3-0.6 part of tara gum, 0.2-0.4 part of tamarind gum, 1-3 parts of soda ash, 3-5 parts of chestnut shells, 0.5-0.7 part of gelatin, 0.1-0.3 part of dried tangerine peel, 0.3-0.5 part of moxa leaves, 4-6 parts of auxiliaries and a proper volume of water. The prepared aerated brick disclosed by the invention has good anti-freezing property; through adding proper auxiliaries and foam stabilizer, the toughness of the aerated brick is improved, and the permeation resistance is improved; moreover, the processing process is simple and easy to implement, the production cost can be reduced, the cyclic economy effect of changing the waste into the valuable is realized, and the competitiveness of the product is improved.

An electrochemical corrosion technology for anode aluminum foils consists of two DC electrochemical corrosion processes. The first electrochemical corrosion process is carried out in mixed solution sulfuric acid, chlorine ion and aluminum ion; the second electrochemical corrosion process is carried out by adding into organic phosphonic acid or phosphate, ATMP, HEDP and EDTMP. It has homogenous appearance, large capacity ration, excellent mechanical strength and water-proof performance.

The invention discloses an environment-friendly universal rust remover. The environment-friendly universal rust remover is mainly prepared by mixing and dissolving the following raw materials including, by weight percent, 1%-10% of EDTMPS, 1%-10% of edetate disodium, 5%-15% of sodium dihydrogen phosphate, 5%-15% of zinc dihydrogen phosphate, 0.1%-0.5% of an enzyme preparation, 0.1%-1% of a conversion film medium, 0.05%-0.2% of a chelating agent, 0.01%-0.05% of a complexing agent and the balance deionized water. The environment-friendly universal rust remover has the advantages of improving thebinding force of paint, enhancing the corrosion resistance, and achieving the antirust effects of being quick in rust removal, free of pollution, healthy and environment-friendly.

This method for manufacturing a lead-free niobate-system ferroelectric thin film device includes: a lower electrode film formation step of forming a lower electrode film on a substrate; a ferroelectric thin film formation step of forming a niobate-system ferroelectric thin film on the lower electrode film; an etch mask pattern formation step of forming an etch mask in a desired pattern on the niobate-system ferroelectric thin film; and a ferroelectric thin film etching step of shaping the niobate-system ferroelectric thin film into a desired fine pattern by wet etching using an etchant comprising: a predetermined chelating agent including at least one selected from EDTMP, NTMP, CyDTA, HEDP, GBMP, DTPMP, and citric acid; an aqueous alkaline solution containing an aqueous ammonia solution; and an aqueous hydrogen peroxide solution.

The invention discloses a method for measuring DDT in the water by molecular imprinting selection fluorescence quenching. The method comprises steps that firstly, the complex is formed through DDT inthe water sample and EDTMPS, secondly, the complex is then sequentially enriched and eluted, and lastly, the fluorescence technology is used for detection. The formed complex has the significant quenching effect on a fluorescent system, and the linear relationship between the fluorescence signal quenching degree and the concentration of DDT in the water is formed. The method is advantaged in thatthe method has on-site, fast, simple and sensitive characteristics, and problems that the existing technology can not work on site, the analysis duration is long, the analysis process is complicated,the conditions are harsh, the energy consumption is large, and especially secondary pollution occurs in the prior art are solved.

The invention provides a scale inhibitor composition, a scale inhibitor and a preparation method of the scale inhibitor. The scale inhibitor composition comprises aliphatic unsaturated acid anhydride,aliphatic unsaturated acid and a unsaturated sulfonic acid substance, wherein a molar ratio of the aliphatic unsaturated acid anhydride to the aliphatic unsaturated acid to the unsaturated sulfonic acid substance is 1:1:1 to 1:0.1:0.1. According to the invention, the scale inhibitor prepared from the scale inhibitor composition can effectively inhibit the formation of calcium carbonate, calcium sulfate, barium sulfate, silicate and other water scales, has good dispersity and certain zinc stability, greatly relieves the scaling phenomenon in an oil-gas development process, and saves the development cost; and the scale inhibitor provided by the invention does not contain phosphorus, can greatly reduce the emission of phosphorus, has good compatibility with HEDP, ATMP, EDTMP and other phosphorus scale inhibitors, and has the advantages of uncomplicated synthesis process and reliable and stable performance.

The invention discloses a processing technology of radix bupleuri traditional Chinese medicine decocotion pieces. The processing technology comprises the following steps: (1) selecting and picking fresh radix bupleuri; (2) soaking the radix bupleuri in an EDTMPS (Ethylenediamine Tetramethylphosphonate Sodium) water solution for 2 to 3 hours; (3) slicing the radix bupleuri, and drying; (4) adding the dried radix bupleuri pieces in rice vinegar accounting for 0.2 time of the dried radix bupleuri in parts by mass, then adding an ethanol solution accounting for 0.1 time in parts by mass, and braising until completely absorbing the solution; (5) continuously adding yellow rice wine accounting for 0.1 time in parts by mass, then adding haw juice, ferment stoste and carbonic acid accounting for 0.2 time of the total amount in parts by mass, and continuously braising until completely absorbing the solution; wherein a mass ratio of the haw juice to the ferment stoste to the carbonic acid is (0.04 to 0.06):(0.01 to 0.02):(0.03 to 0.05); (6) drying and sorting, and packaging, thus obtaining a finished product-radix bupleuri decoction pieces. According to the processing technology disclosed bythe invention, by adopting the haw juice, the ferment stoste and the carbonic acid as a reinforcement system, the content and the side effect rate of effective components of the radix bupleuri traditional Chinese medicine decocotion pieces can be increased.

The invention provides an alkaline low-phosphorous reverse osmosis membrane anti-scaling agent and a preparation method. The alkaline low-phosphorous reverse osmosis membrane anti-scaling agent comprises the following components in percentage by mass: 15-50% of EDTMPS, 10-40% of PAA with the molecular weight of 1800-2200, 5-20% of dimethyl fumarate, 2-8% of 0.5-2mg/ml graphene oxide aqueous dispersion, and 20-50% of a pH value adjusting agent. The alkaline low-phosphorous reverse osmosis membrane anti-scaling agent is simple in production process, free of waste emission, controllable in cost, appropriate in price, applicable to scale dispersion of various reverse osmosis membranes, capable of effectively achieving synergistic effects of physical adsorption and chemical adsorption on pollutants, and meanwhile is excellent in corrosion inhibition, sterilization and mold prevention.

The invention relates to scale removers, especially to a circulating-water saving scale remover. The circulating-water saving scale remover is characterized by being a mixture of two or more of polymaleic anhydride, activated carbon, sodium alginate, polyacrylamide, polyaluminum sulfate, boron oxide, a hydroxy carboxylate polymer HLE, polymeric ferrous sulfate, ethylene diamine tetra (methylene phosphonic acid)sodium EDTMPS, polyhydric alcohol phosphate ester PAPE, starch or caustic soda. According to the invention, calcium and magnesium ions in macromoleclar polymer complexing water can formprecipitate, thereby not only increasing the concentration multiple, but also greatly lowering the hardness of water, and not causing water scaling simultaneously.

The invention provides a method for producing a compound fertilizer by using phosphorite tailings, which comprises the following steps: grinding phosphorite tailings raw materials into powder, putting the powder into a reaction container, adding a buffering agent, adding industrial waste phosphoric acid until the pH value is less than or equal to 4.5, and stirring for 2-3 hours at 65-85 DEG C; carrying out solid-liquid separation to remove insoluble solids, and slowly evaporating and crystallizing the residual solution at 50-60 DEG C; and carrying out solid-liquid separation again, washing the solid material with water, and then drying the solid material to obtain the compound fertilizer product. Industrial waste phosphoric acid is used as an acidolysis raw material, so that the method is low in cost and environment-friendly; according to the invention, EDTMPS, DTPMPA or EDDHA is used as a buffering agent, a stable chelate is formed through a chelation reaction between the chelating agent and calcium and magnesium ions, and the metal chelate is generally of a flocculent structure and can flow in a solution, so that further reaction between acid and internal raw materials cannot be blocked, and the reaction speed and the final reaction degree are improved.

The invention relates to a method for preparing coal-based activated carbon with high adsorption capacity by using low temperature and low mesopore pore volume. The method comprise the following concrete steps that (1) coal-based carbonized materials are put into a EDTMPS solution with the mass percent being 10 to 40 percent to be soaked for 8 to 10h; (2) materials obtained in the step (1) are putinto a carbonization furnace to be activated for 40 to 60 minutes at the temperature of 400 to 500 DEG C; (3) the activated materials are discharged out of the furnace and are cooled to room temperature; the cooled materials are put into an auxiliary agent solution with the mass percent being 5 percent to be soaked for 30 to 40 minutes; (4) the auxiliary agent solution is discharged; the activated materials are flushed by water until the PH value is neutral; (5) the activated materials are dried at 150 to 200 DEG C to reach the required moisture; a mesopore developed activated carbon finishedproduct is obtained. The method has the advantages that the activation temperature is reduced to 400 to 500 DEG C from the original 900 DEG C; energy sources are saved; under the condition that the total pore volume of the activated carbon is not reduced, the mesopore pore volume proportion is increased to 20 to 40 percent from the original 10 percent.

The invention provides a preparation method of EDTMP-modified ferroferric oxide nanoparticles, and the preparation method comprises the following steps: mixing and dissolving FeCl3(subscript).6H2(subscript)O and FeCl2(subscript).4H2(subscript)O in a hydrochloric acid solution to obtain a mixed solution; mixing the mixed solution with an aqueous solution for reaction to obtain a reaction solution;and subjecting the reaction solution and an EDTMP solution to reaction to obtain the EDTMP-modified ferroferric oxide nanoparticles. The IO-EDTMP nanoparticles are synthesized by a modified coprecipitation method, so that the IO-EDTMP nanoparticles not only have good colloid stability and biocompatibility, but also have good T1 and T2 relaxation effects, and have potential application value in thefield of clinical MRI imaging diagnosis as a contrast agent. The invention also provides EDTMP-modified ferroferric oxide nanoparticles and application thereof.

The invention opened a method of boiler antiscale slow release agent and the employing method. The ingredient of the weight fraction was: EDTMP 2-5g, NaOH 80-120g, NaCO3 180-220, the method was: a. adding one portion of antiscale slow release agent due to the evaporating capacity per ton water, keep the water alkalinity, was 7-8 mgN/L, pH was 10-11.5; b. routinely pollution discharge while the boiler application. Its advantages include no need for factory building and equipment, saving the salt and treating water, no need for assay, low cost, save fuel, yield good ecnomic returns and social returens.