13 results about "Didodecyl phosphate" patented technology

The invention discloses a low-foam acidic zinc plating additive and a preparation process thereof, and belongs to the technical field of electroplating additives, the additive comprises a low-foam softening agent and a water-based brightener, and the low-foam softening agent comprises the following raw materials in percentage by mass: 0.8-1.2% of polyethyleneimine, 0.03-0.06% of monododecyl phosphate potassium, 0.2-0.6% of water-soluble polyether amine and the balance of water. The water-based brightener is prepared from the following raw materials: 0.6 to 1.2 percent of 5-hydroxymethylfurfural, 0.2 to 0.4 percent of L-cysteine salt, 0.1 to 0.15 percent of 4-amino-2 (1H) pyrimidone, 0.05 to 0.1 percent of sodium salicylate, 1 to 1.5 percent of citric acid, 0.3 to 0.5 percent of alpha-ketoglutaric acid, 0.2 to 0.4 percent of erythorbic acid and the balance of water. The water-based formula is prepared by optimizing the components in the additive, the components are uniformly dispersed, the foam amount is low, and the plating quality is good.

The application discloses a low-foam acid zinc plating additive and a preparation process thereof, and belongs to the technical field of electroplating additives. The additive comprises a low-foam softener and a water-based brightener. The low-foam softener comprises the following raw materials in percentage by mass: polyethylene imine 0.8-1.2%, monododecyl phosphate potassium 0.03-0.06%, water-soluble polyether amine 0.2-0.6%, and the balance is water. The water-based brightener comprises the following raw materials: 5-hydroxymethyl furfural 0.6-1.2%, L-cysteine salt 0.2-0.4%, 4-amino-2(1H) pyrimidinone 0.1-0.15%, sodium salicylate 0.05-0.1%, citric acid 1-1.5%, alpha-ketoglutaric acid 0.3-0.5%, isoascorbic acid 0.2-0.4%, and the balance is water. The application optimizes the components in the additive, prepares a water-based formula, and the components are uniformly dispersed, the foam amount is low, and the plating layer quality is good.

The application discloses polylactic acid-polycaprolactone degradable woven bag non-woven fabric and a preparation method thereof. The non-woven fabric is prepared from the following components: polylactic acid, polycaprolactone, sodium lauryl sulfate, dopamine-modified nano-titanium dioxide composite, a compound system of citric acid and epoxy soybean oil, a combination of sodium carboxymethyl cellulose and calcium dodecyl phosphate, and a combination of montmorillonite and D-isoascorbic acid palmitate. The above system forms a multi-level degradation regulation network structure with surface interface regulation, intermediate layer microstructure regulation and nano functional particle synergistic catalysis, and realizes controllable regulation of the degradation rate of polylactic acid-polycaprolactone blended materials. A preparation method is used to prepare the non-woven fabric. The application has the following beneficial effects: the problems of the prior art, such as difficult accurate regulation of the degradation rate of polylactic acid-polycaprolactone blended materials, poor environmental adaptability and limited application scenarios, are solved.

The invention discloses a grinding aid for efficiently preparing limestone powder and a preparation method of the grinding aid, and belongs to the technical field of limestone powder preparation. The grinding aid is prepared from the following raw materials: 10-30 parts of phosphate amine salt, 1-5 parts of sodium n-alkyl benzene sulfonate, 1-3 parts of ionic liquid, 1-5 parts of La < 3 + > doped CeO2 nanoparticles, 1-3 parts of a permeation component, 5-15 parts of a dispersion component and 40-80 parts of water. Wherein the phosphate amine salt is dodecyl phosphate diethanolamine salt, the linear alkyl sodium benzene sulfonate is sodium tetradecyl benzene sulfonate, the ionic liquid is 1-butyl-3-methylimidazole bis (trifluoromethanesulfonyl) imide salt, the permeation component is sec-octyl alcohol polyoxyethylene ether, and the dispersion component comprises dipropylene glycol and dimethylethanolamine. The invention relates to 2-amino-2-methyl-1-propanol and a preparation method thereof. According to the grinding aid disclosed by the invention, through the synergistic effect of various components, the grinding aid is fully mixed with limestone and permeates into surface gaps of the limestone, so that the surface tension is effectively reduced, the crack propagation is promoted, the limestone powder fineness is improved, the grinding efficiency is improved, and the grinding energy consumption is reduced.

The invention relates to the technical field of preparation methods of mesoporous iron phosphate, in particular to a preparation method of mesoporous iron phosphate, which comprises the following steps: (1) preparation of a solution A: weighing 0.03-0.06 mol of dodecyl phosphate, dissolving the dodecyl phosphate in deionized water with a first preset volume, adding 8-12 mL of absolute ethyl alcohol, stirring at the temperature of 50-60 DEG C for 1-2 hours, and filtering to obtain the solution A; after fully mixing, stirring at a first preset temperature for a first preset time to obtain a solution A; (2) preparation of a solution B: respectively weighing FeCl3. 6H2O and H3PO4 according to the molar ratio of Fe < 3 + > to PO4 < 3-> being 1: 1, and dissolving the FeCl3. 6H2O and the H3PO4 in deionized water with a second preset volume to obtain the solution B; (3) preparing a solution C: mixing the solution A and the solution B, and adjusting the pH of the mixed solution to be neutral to obtain the solution C; (4) preparing a precursor, namely stirring the solution C at a second preset temperature for a second preset time, and drying in a drying oven to obtain the precursor; and (5) calcining: sintering the precursor to obtain mesoporous FePO4.

The invention discloses an oil-soluble surfactant mediated modified nanofiltration membrane and an application thereof in lithium and magnesium separation. The preparation method comprises the following steps: firstly soaking a polymer substrate with an ethanol solution, then soaking the polymer substrate with a piperazine aqueous solution, finally soaking the polymer substrate with a triformyl chloride n-hexane solution containing an oil-soluble surfactant, and drying the polymer substrate to obtain the oil-soluble surfactant mediated modified nanofiltration membrane. The modified nanofiltration membrane prepared by the invention can be used for separating lithium and magnesium in salt lake brine, and the separation factors of the nanofiltration membrane modified by two surfactants, namely dodecyl phosphate and di (2-ethylhexyl) phosphate, are as follows: SLi < + > / Mg < 2 + > = 78.17 and 161.65 respectively. The modified nanofiltration membrane provided by the invention has the characteristics of high separation factor, simple synthesis method operation, pollution resistance, strong stability and the like, provides an effective medium environment for subsequent preparation of battery grade Li2CO3, and has very strong practical application value.

The present application relates to the technical field of high polymer material preparation, and particularly relates to a spinning oil composition, a spinning oil and a preparation method and application thereof; the composition comprises, in terms of weight parts, polyoxyethylene fatty acid ester: 20-30 parts; hydrogenated castor oil polyoxyethylene ether: 8-10 parts; alkyl silicone oil: 25-35 parts; polyether silicone oil: 8-15 parts; alkyl polyoxyethylene ether phosphate ester salt: 5-8 parts; alkyl thiosuccinate: 7-10 parts; dodecyl phosphate ester salt: 7-10 parts; ethylene oxide-propylene oxide block copolymer: 3-6 parts; polyoxyethylene quaternary ammonium salt: 5-8 parts; penetrating agent: 2-4 parts. The spinning oil can significantly improve the bundling property, antistatic property and emulsifying property of polyethylene fiber spinning, thereby effectively solving a series of problems of polyethylene fiber in the spinning process, including poor bundling property, high static voltage and easy winding, etc.

The invention relates to a high-weather-resistance electrical conduit and a preparation process thereof, and belongs to the technical field of electrical conduits. The electrical conduit comprises a base tube and a weather-proof protective coating compounded on the surface of the steel base tube, the weather-proof protective coating is obtained by coating the outer surface of the base tube with a weather-proof protective coating and curing the weather-proof protective coating, and the formula of the weather-proof protective coating is as follows: by weight, the content of the weather-proof protective coating is 1-5% of that of the base tube. The coating is prepared from 55-75 parts of epoxy resin, 5-10 parts of composite filler, 1-2 parts of a flatting agent, 1-2 parts of a defoaming agent, 10-20 parts of a curing agent and 40-60 parts of a solvent. The composite filler is of a graphite phase carbon nitride-hydroxyapatite composite structure of which the surface is modified by dodecyl phosphate. The electrical conduit prepared by the invention has good mechanical property, high weather resistance and high corrosion resistance.

The invention relates to an efficient activating and intensifying collecting flotation method for silicate type zinc oxide ore, and belongs to the technical field of mineral processing. Aiming at the low-grade silicate type zinc oxide ore, a composite activating agent composed of inorganic ammonium salt and sodium ethylene diamine tetracetate is adopted for implementing efficient activating treatment on the surface of the silicate type zinc oxide ore, so that the surface activity of the target ore is improved; octyl hydroximic acid, potassium dodecyl phosphate and amyl xanthate are selected to form a multi-component collecting agent, and the activated silicate type zinc oxide minerals are selectively and intensively collected, so that efficient flotation of the silicate type zinc oxide minerals is achieved. According to the method, the zinc oxide minerals can be efficiently activated and selectively collected, high-concentration sodium sulfide is not needed for vulcanization, the flotation effect is good, and the problem that foam is difficult to eliminate through a vulcanization-amine flotation method of the refractory silicate type zinc oxide minerals can be solved.

The invention discloses a three-component collecting agent and application of the three-component collecting agent in sulfur-free activated flotation of siliceous refractory copper oxide ore, and belongs to the technical field of mineral flotation agents. The three-component collecting agent is prepared from the following components in parts by weight: 20 to 30 parts of a hydroximic acid chelating collecting agent, 30 to 40 parts of sulfydryl xanthate and 30 to 40 parts of potassium dodecyl phosphate. According to the three-component collecting agent provided by the invention, the flotation effect of the siliceous copper oxide ore is remarkably improved under the condition that a vulcanizing agent is not used through the action of the activating agent on the basis of the synergistic adsorption principle of a surfactant. The activating agent can effectively corrode the surface of the mineral and expose active sites, so that the energy barrier of chemical reaction between the collecting agent and the surface of the mineral is reduced. According to the three-component collecting agent, through the synergistic adsorption effect, the collecting performance of each single agent is enhanced, and the surface activity of the collecting agent is further enhanced. The synergistic effect mechanism not only improves the efficiency of the collecting agent, but also optimizes the selectivity of the flotation process, so that the flotation efficiency of the siliceous refractory copper oxide ore is remarkably improved.

The invention provides a liquid crystal polyarylester conveying belt and a preparation method of a covering layer of the liquid crystal polyarylester conveying belt, the conveying belt comprises a liquid crystal polyarylester fabric belt core and the covering layer fixed on the surface of the belt core through an interlayer adhesive, and the belt core takes liquid crystal polyarylester fibers as warp yarns and nylon filaments as weft yarns; the covering layer is prepared from components in parts by mass as follows: 55-70 parts of synthetic rubber, 30-40 parts of natural rubber, 5-15 parts of a thermoplastic polyurethane elastomer, 2-6 parts of chopped fibers, 5-8 parts of a reinforcing agent, 0.5-0.8 parts of nano argil, 2-4 parts of a smoke suppressant and 5-10 parts of a flame retardant; the chopped fibers comprise liquid crystal polyarylester fibers, and the chopped fibers are modified by adopting sodium monoalkyl ether phosphate or potassium dodecyl phosphate. The belt core has high tensile strength, the tensile strength is improved by adding the modified chopped fibers of the liquid crystal polyarylate fibers into the material of the covering layer, so that the overall tensile strength of the conveying belt is further improved, and the belt core has good market prospects.

This invention discloses a method for preparing a modified lithium-rich layered cathode material, comprising the following steps: mixing a dodecyl phosphate compound of a specific carbon chain length with deionized water to obtain a dodecyl phosphate compound solution; adding the lithium-rich layered cathode material to the dodecyl phosphate compound solution, dispersing and stirring to form a suspension; spray-drying the suspension to obtain a composite powder; and heat-treating the composite powder and cooling it to room temperature to obtain the modified lithium-rich layered cathode material. The dodecyl phosphate compound of the specific carbon chain length is an ester compound formed by a straight-chain alkyl group with 12 carbon atoms and a phosphate group. This invention also provides the modified lithium-rich layered cathode material and a lithium-ion battery based on the modified lithium-rich layered cathode material, solving the problem of capacity and voltage decay caused by surface oxygen release and structural phase transition during high-voltage cycling of the lithium-rich layered cathode material.

The invention relates to the technical field of rare metals, and provides a preparation method of high-purity metal hafnium, after hafnium-containing waste is dissolved, the high-purity metal hafnium is obtained through extraction, washing, reverse extraction, precipitation and calcination, and an organic phase reagent adopted for extraction comprises the following components in parts by weight: 20-30 parts of tributyl phosphate, 6-8 parts of a synergist and 200-300 parts of a diluent. The synergist comprises one or two of dodecyl phosphate, hexadecyl phosphate and octadecyl phosphate. According to the technical scheme, the problem of low purity of metal hafnium in related technologies is solved.