21results about How to "Strong chelating ability" patented technology

The invention discloses weather-resistant water-based two-component epoxy paint and a preparation method thereof, and belongs to the technical field of paint. The weather-resistant water-based two-component epoxy paint comprises a component A and a component B, the component A comprises 50-70 parts by mass of a modified waterborne epoxy emulsion, 3-6 parts by mass of a pigment, 7-13 parts by mass of a modified filler, 0.3-1.5 parts by mass of a wetting dispersant, 2-4 parts by mass of a coalescing agent, 0.1-0.5 part by mass of a defoaming agent, 0.5-5 parts by mass of water and 0.5-1 part by mass of a leveling agent; the component B comprises 35-65 parts by mass of a modified curing agent, 10-20 parts by mass of ethanol and 30-40 parts by mass of water; the component A and the component B are mixed according to the mass ratio of 100: (20-30); the modified curing agent is obtained by reacting polyethylene glycol diglycidyl ether, epoxy resin, triethylene tetramine, functional organic silicon and phenyl glycidyl ether; the modified filler is obtained by modifying nano silicon dioxide with poly (m-xylylenediamine) and a silane coupling agent KH560; the modified water-based epoxy emulsion is a phytic acid modified water-based epoxy emulsion.

The invention discloses concrete with high salt corrosion resistance and a preparation method of the concrete. The concrete is prepared from 300-400 kg / m < 3 > of cement, 50-150 kg / m < 3 > of slag powder, 1000-1200 kg / m < 3 > of gravel, 650-800 kg / m < 3 > of machine-made sand, 0.5-2 kg / m < 3 > of a modified polycarboxylic acid water reducing agent, 0.005-0.01 kg / m < 3 > of an air entraining agent, 0.05-0.1 kg / m < 3 > of an ion chelating agent, 0.05-0.1 kg / m < 3 > of polyacrylamide, 0.01-0.05 kg / m < 3 > of sodium methyl silicate, 0.1-0.5 kg / m < 3 > of multiwalled carbon nanotube dispersion liquid and 140-160 kg / m < 3 > of water. The preparation method comprises the following steps: stirring and mixing the modified polycarboxylate superplasticizer, the air entraining agent, the ion chelating agent, the polyacrylamide, the sodium methyl silicate and part of the water for mixing to obtain an admixture mixed solution; sequentially putting broken stones, cement, machine-made sand, the admixture mixed solution, the multi-walled carbon nanotube dispersion liquid and the rest of mixing water into a stirrer, and stirring for 2-3 minutes, so as to obtain the concrete with high salt corrosion resistance. The concrete has high salt corrosion resistance in a complex service environment, the service life of a concrete structure is effectively prolonged, and a reliable guarantee is provided for infrastructure construction.

The invention relates to a quick-dry cooling textile integrating flame retardance, antibiosis, radiation cooling and evaporative cooling as well as preparation and application of the quick-dry cooling textile, and belongs to the technical field of functional finishing of textiles. The preparation process is simple, the cost is low, and the prepared textile has good flame retardance, antibiosis, one-way moisture conduction and cooling performance and can be applied to the fields of personal heat management, fire protection, building cooling, antibiosis and the like.

The invention relates to the technical field of aluminum alloys, in particular to a high-strength corrosion-resistant aluminum material and a preparation method thereof. The preparation method comprises the following steps: mixing a chitosan corrosion inhibitor, an amino acid corrosion inhibitor, polysulfone, lignosulfonate and other raw materials to obtain a microcapsule corrosion inhibitor; and adding the microcapsule corrosion inhibitor into a dopamine solution, and carrying out stirring reaction to obtain the dopamine microcapsule corrosion inhibitor. Adding the dopamine microcapsule corrosion inhibitor and the curing agent into epoxy resin to obtain an epoxy resin coating; and the surface of the pretreated aluminum profile is coated with epoxy resin paint, and a finished product is obtained. The finished product prepared through the method has good corrosion resistance, durability and crack resistance, and therefore the finished product has wide application prospects in the technical field of aluminum alloy.

The invention relates to the field of electro-catalysis new materials, and provides a biomass-based carbon-supported iron phosphide nano-catalyst and a preparation method and application thereof.According to the technical scheme, waste pomelo peel biomass is fully utilized, the stability and conductivity of a metal phosphide catalyst are improved, phytic acid is used as a phosphorus source for green synthesis of metal phosphide, and the metal phosphide is recycled. The problems of high energy consumption and high pollution in a traditional ammonia synthesis process are solved through an electro-catalysis technology, the technical and use requirements in actual production are met, and a brand-new ammonia synthesis way is provided.

The present application relates to the technical field of perovskite devices, and particularly relates to a packaging method of a perovskite device. The packaging method provided by the present application comprises the following steps: mixing methyl methacrylate, 2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate and 2-hydroxy-2-methyl-1-phenylpropanone to obtain a packaging slurry; coating the packaging slurry on the surface of the perovskite device, covering a glass plate, and performing light curing. The packaging method can improve the photoelectric current density of the device, thereby improving the efficiency of the device, and can significantly improve the outdoor stability of the device.

The present invention relates to the technical field of coatings, and discloses a method for preparing a water-based acrylic anticorrosive coating. The present invention uses PEPA and phosphorus pentoxide as raw materials to obtain bis-PEPA-based phosphate. Using 3-hydroxyglutaric acid, aminopropyltriethoxysilane, hexamethylene diisocyanate, graphene oxide, etc. as raw materials, bis-silane-modified graphene oxide is prepared. Add bis-silane-modified graphene oxide, bis-PEPA-based phosphate, etc. to the water-based acrylic emulsion, stir and mix evenly, grind and filter, and obtain a water-based acrylic anticorrosive coating. The present invention utilizes phosphorus hydroxyl, silicon hydroxyl, and graphene in the coating, and the three cooperate to assist in improving the adhesion and corrosion resistance of the coating, and utilize flame retardant elements to improve the flame retardant properties of the coating. The water-based acrylic anticorrosive coating prepared by the present invention has excellent anticorrosion performance, flame retardant properties, and adhesion.

The invention discloses a beneficiation process for beneficiation and recovery of scheelite and fluorite from argillized tungsten polymetallic ore. The beneficiation process sequentially comprises the steps of magnetite removal, low-intensity magnetic separation mineral removal, sulphide ore removal through acidification, scheelite-fluorite mixed concentration and centrifugal separation to obtain scheelite concentrate and fluorite concentrate. By adopting magnetic separation and flotation operation, corrosion to equipment can be reduced, meanwhile, the grade and the recovery rate of the scheelite concentrate and the fluorite can be improved, and under the condition that the strong magnetic tailings contain 0.34% of tungsten and 25.65% of fluorite, the scheelite concentrate with the tungsten content of 17.96% and the accumulative recovery rate of 20.42% can be obtained through tests; the content of fluorite in the fluorite concentrate is 77.86%, and the accumulative recovery rate is 47.72%.

The application discloses a treatment system for treating strongly complexed heavy metal wastewater in an electroplating industry, comprising an oxidation reaction tank, a Fenton-like reaction tank, a homogenizing adjusting tank, a chemical mixing tank, a No. I flocculation tank, a No. I sedimentation tank, a heavy metal adsorption tank, a No. II flocculation tank, a No. II sedimentation tank and a clean water tank which are connected in sequence; wherein, the bottom of the No. II sedimentation tank is provided with two sludge discharge ports, one of which is connected with the heavy metal adsorption tank through a sludge backflow pipeline, and the other is connected with a regeneration system. The application also discloses a method for treating strongly complexed heavy metal wastewater in the electroplating industry based on the treatment system. The method adopts the process of first oxidizing and breaking the complex, then adding alkali to precipitate, and finally modifying zeolite to adsorb, so that the electroplating strongly complexed heavy metal wastewater can be treated, the concentration of heavy metal ions in the effluent can be stably reduced to below 0.1 mg / L, and the discharge standard can be reached.

The invention provides a preservative as well as a preparation method and application thereof, and belongs to the technical field of preservatives. The 8-hydroxyquinoline in the preservative provided by the invention has strong coordination and chelation capabilities, and is adsorbed on the surface of a matrix through physical and chemical actions to form a protective film, so that permeation of a corrosion medium is blocked; acetylsalicylic acid can form a layer of protective film in the coating, so that the corrosion process is inhibited; carboxyglyceride can improve the flexibility and durability of the coating, and also has a certain antibacterial property, so that the corrosion resistance of the coating is enhanced; bronopol is used as a broad-spectrum preservative, can kill microorganisms by releasing active oxygen in the coating, and also can improve the antibacterial and anticorrosive properties of the coating through the synergistic effect with other preservatives; the alcohol solvent is an excellent solvent and stabilizer, and when the alcohol solvent is combined with other preservative components for use, the preservative with excellent corrosion resistance can be formed.

The present invention relates to the technical field of film-forming descaling agents, and in particular to a boiler water treatment agent based on polyamines, a preparation method thereof, and a use method thereof. The raw materials for preparing the boiler water treatment agent include: polyamines and composite chelating agents, and the molar ratio is 1: (4-6). The boiler water treatment agent provided by the present invention has a wide applicable temperature and pressure range, can withstand extreme conditions of up to 600°C and 17.8MPa, has excellent film-forming performance, can form a denser and more stable protective film layer on the metal surface, and provides reliable anti-corrosion protection. The corrosion rate of carbon steel in boiler water is as low as 0.12g / (m 2 h).

The invention relates to a cow milk beta-casein derived intestinal zinc absorption promoting peptide and application thereof in preparation of a zinc supplement. The sequence of the peptide for promoting intestinal zinc absorption is YPVEPF, and the peptide is non-toxic, high in safety, capable of being specifically combined with Zn < 2 + >, high in zinc chelating capacity and capable of remarkably improving the zinc transport amount in a Caco-2 small intestine epithelial cell model, so that the peptide has the good activity of improving intestinal zinc absorption. The peptide capable of promoting intestinal zinc absorption can be obtained through a solid-phase synthesis method, so that large-scale production can be carried out, and the synthesized peptide capable of promoting intestinal zinc absorption is high in purity and stable in quality, and can meet current market requirements.

The invention relates to the technical field of metal material surface cleaning agents, in particular to a degreasing agent special for a steel plate and a preparation method thereof. The special degreasing agent for the steel plate comprises the following components in parts by mass: 35-36 parts of an alkali washing agent, 40-41 parts of a builder, 15-16 parts of a filling agent, 0.5-1 part of a surfactant and 8-10 parts of a chelating agent, wherein the chelating agent is sodium nitrilotriacetate and sodium gluconate, and the filling agent is sodium sulfate. The degreasing agent special for the steel plate does not contain harmful substances such as heavy metal and phosphorus, pollution to the environment can be effectively reduced, the saponification reaction of oil stains is enhanced by adding the chelating agent, the cleaning effect is remarkably improved, and the degreasing agent has both environment friendliness and efficient cleaning performance.

The invention discloses a stable composition containing epigallocatechin gallate as well as a preparation method and application of the stable composition. The stable composition is prepared from glycerol, vitamin C, chlorogenic acid, ethyoxyl diethylene glycol and epigallocatechin gallate. The preparation method comprises the following steps: mixing glycerol and epigallocatechin gallate at room temperature, stirring and dispersing uniformly, heating to 75-80 DEG C, and stirring until complete dissolution to obtain a transparent solution which is a phase A; uniformly stirring vitamin C, chlorogenic acid and ethyoxyl diethylene glycol at room temperature to obtain a transparent solution which is a phase B; and uniformly mixing the phase A and the phase B to obtain the stable composition. The composition has the characteristics of high temperature resistance, illumination resistance and high stability, and the preparation method of the composition is simple and low in cost.

The invention discloses a cassiterite collecting agent and a preparation method and application thereof, and belongs to the technical field of mineral separation. The cassiterite collecting agent is formed by coordinating and assembling the following cinnamon hydroxamic acid ligands and metal ions with the valence of more than two: # imgabs0 #, wherein M is a monovalent cation; in the formula, R is alkoxy with 1 to 5 carbon atoms or alkyl with 1 to 5 carbon atoms. The cassiterite collecting agent has very high targeted adsorption capacity on the cassiterite surface, meanwhile has excellent hydrophobic performance, particularly can achieve selective separation of cassiterite and gangue minerals such as tourmaline and garnet and enhanced flotation recovery of fine-fraction cassiterite under the condition of very low dosage, and is low in preparation cost, good in performance, simple in process and suitable for industrial production. The method is of great significance in improving efficient comprehensive recovery of cassiterite resources and is beneficial to further popularization and application.

The invention relates to the field of sodium ion batteries, and discloses a preparation method and application of a ferrocobalt bimetallic sulfide nitrogen-doped porous carbon framework composite material. The preparation method comprises the following steps: by taking aminotriacetic acid as a ligand, chelating cobalt and iron ions through ball milling to prepare a CoFe-NTA precursor; the precursor is pyrolyzed, metal ions are subjected to carbon thermal reduction, and nitrogen-doped carbon formed by in-situ conversion of nitrilotriacetic acid can be tightly combined with ferrocobalt sulfide, so that the volume change generated during deintercalation of sodium ions can be effectively relieved, the cycling stability of the material can be enhanced, and the conductivity and the sodium ion diffusion rate of the composite material can be improved; and carrying out gas-phase vulcanization to finally obtain the ferrocobalt bimetallic sulfide nitrogen-doped porous carbon framework composite material. The nitrogen-doped porous carbon framework is beneficial to contact between electrolyte and an electrode material, active sites are fully utilized, the structural stability of the composite material can be enhanced, and when the nitrogen-doped porous carbon framework is used as a sodium-ion battery negative electrode, the nitrogen-doped porous carbon framework shows excellent sodium storage performance.

The present application relates to the technical field of gold processing, and specifically discloses a gold black water removal and its preparation method and application. The gold black water removal includes the following ingredients in parts by weight: 10-20 parts of baking soda, 4-8 parts of betaine, 1-3 parts of anionic surfactant, 6-9 parts of complex, 1-5 parts of stabilizer, 0.6-2.7 parts of enzyme preparation, and 80-100 parts of water; the complex is compounded with gluconolactone and octadecylamine; its preparation method is: baking soda, betaine, anionic surfactant, complex, and stabilizer are put into water, mixed evenly, and gold black water removal is obtained. The gold black water removal of the present application has the advantage of removing black spots without affecting the hardness of gold through the synergistic effect between the raw materials.

The invention discloses a metal ion-nitrogen-containing heteroaromatic complex collecting agent, a preparation method thereof and application of the metal ion-nitrogen-containing heteroaromatic complex collecting agent in tungsten ore flotation, and belongs to the technical field of ore dressing. The metal ion-nitrogen-containing heteroaromatic complex collecting agent is formed by coordinating and assembling a nitrogen-containing heteroaromatic ligand compound containing a hydroxamic acid group and metal ions with the valence of more than two, the nitrogen-containing heteroaromatic ligand compound containing the hydroxamic acid group and the molecular structure of the nitrogen-containing heteroaromatic ligand compound are as follows: # imgabs0 #, and R1, R2, R3, R4 or R5 are the hydroxamic acid group; compared with an existing Pb-BHA complex collecting agent, the tungsten-containing mineral collecting agent has higher targeted adsorption and selective collecting capacity and higher flotation rate on tungsten-containing minerals, flotation of the tungsten-containing minerals can be effectively enhanced, particularly, bulk flotation of various tungsten ores can be efficiently achieved under the condition of low dosage, and the comprehensive recovery rate of tungsten resources is greatly increased.

The invention relates to an alkyl diphosphonic acid composition as well as a preparation and purification method and application thereof, and belongs to the technical field of preparation of alkyl diphosphonic acid compositions. The alkyl diphosphonic acid composition comprises the following components in percentage by mass: more than or equal to 90% of diphosphonic acid compound with a structural formula I, 0-10% of phosphorous acid, 0-10% of phosphoric acid, 0-10% of alkyl phosphonic acid, 0-10% of dialkyl phosphonic acid and 0-10% of organic acid, the alkyl diphosphonic acid composition can be applied to metal surface anti-corrosion treatment, such as deposition on iron, aluminum, copper and zinc to form a self-assembled single layer or organic phosphonate multilayer, so that the metal corrosion resistance is enhanced, and the inhibition effect on metal corrosion is achieved.

The invention belongs to the technical field of ion exchange and high-purity chemical purification, and particularly relates to bifunctional modified ion adsorption resin as well as a preparation method and application thereof. A crown ether functional group and a hydroximic acid functional group are introduced after a macroporous cross-linked resin matrix is subjected to chloromethylation, and a functional adsorption site with cavity size selectivity and multidentate coordination capability is constructed at the same time. The crown ether functional group can generate a cavity coordination effect with sodium ions and potassium ions, so that the selective adsorption of the resin on monovalent metal ions is remarkably improved; the hydroximic acid functional group has strong chelating ability, and can form a stable complexing structure with calcium ions by means of multidentate coordination, so that efficient removal of divalent metal ions is realized. The bifunctional modified ion adsorption resin prepared by the invention shows remarkable selectivity on metal ions in ethyl lactate, can realize ppt-level adsorption, and is suitable for deep purification treatment of high-end electronic chemicals.

The application relates to the technical field of biological fertilizers, and particularly discloses a fruit and vegetable coloring and sweetening biological fertilizer containing fish bone powder extract and a preparation method thereof. The fruit and vegetable coloring and sweetening biological fertilizer containing fish bone powder extract comprises, in terms of weight parts, 25-35 parts of organic fermentation material, 40-60 parts of inorganic fermentation material, 8-12 parts of compound microbial bacteria, 15-25 parts of fish bone powder extract, 5-10 parts of chitosan quaternary ammonium salt, 4-6 parts of a functional supplement and 1-2 parts of a nutrient supplement; the compound microbial bacteria comprises Bacillus subtilis, Paenibacillus mucilaginosus, Candida utilis and Rhodopseudomonas palustris. The fruit and vegetable coloring and sweetening biological fertilizer containing fish bone powder extract can significantly improve the formation and precipitation of fruit and vegetable color and the sweet taste of the fruit and vegetable.