4 results about "Imidodiacetic acid" patented technology

The application relates to the technical field of lithium ion batteries, and discloses a silicon-carbon nanotube composite material, which is obtained by dehydration of hydroxylated silicon particles, hydroxylated carbon nanotubes and iminodiacetic acid. The silicon-carbon nanotube composite material provided by the application can anchor the silicon particles on the carbon nanotubes through covalent bond action, can increase the uniformity of dispersion of the carbon nanotubes and the silicon particles, can improve the electron transmission capacity, can play a certain counterforce on the volume expansion force of the silicon particles, can reduce the generation of electrode cracks, can further reduce the consumption of electrolyte, and can improve the cycle stability of the whole electrode. Meanwhile, the preparation method provided by the application does not need a complex operation process, has simple process condition requirements, and is suitable for large-scale production.

The application relates to an iminodiacetic acid type chelating resin and a preparation method and application thereof, and the preparation method comprises the following steps: (1) in the case that the stirring speed is 200-350 r / min, two dispersants are dissolved in water, then ethylbenzene, glycidyl methacrylate, trimethylolpropane trimethacrylate, isooctane and di-t-butyl peroxide are added, the raw materials are reacted after ultrasonic mixing, centrifugal separation is carried out after the reaction is completed, the filter cake is cleaned and dried, and resin microspheres are obtained; (2) in the stirring state, the resin microspheres obtained in the step (1) are added into water, then iminodiacetic acid is added, stirring is continued, then preliminary reaction is carried out by heating, NaOH is further added, reaction is carried out by heating, after the reaction is completed, filtration, cleaning and drying are carried out, and the iminodiacetic acid type chelating resin is obtained. The chelating resin particle size can be controlled, the particle size is relatively large, the specific surface area is large, the adsorption capacity is high, and the chelating resin can be used for adsorbing lead ions in heavy salt matrix.

This invention discloses a radiation-shielding flexible material and its preparation method, relating to the field of radiation-shielding flexible material technology. In preparing the radiation-shielding flexible material, the invention involves treating a protective powder with γ-chloropropyltriethoxysilane to obtain a pre-modified protective powder; reacting the pre-modified protective powder with a composite antibacterial agent to obtain a modified protective powder; reacting phenylphosphoyl dichloride sequentially with diethyl iminodiacetic acid, ethylenediamine, and benzothiazole-2-carboxaldehyde to obtain a phosphorus-nitrogen-sulfur flame retardant; mixing the modified protective powder, the phosphorus-nitrogen-sulfur flame retardant, and thermoplastic polyurethane, using N,N-dimethylformamide as a dispersant, to prepare a protective slurry; coating the protective slurry onto the surface of a fabric and drying to obtain the radiation-shielding flexible material. The radiation-shielding flexible material prepared by this invention can protect against radiation while also possessing excellent flame-retardant and antibacterial properties.

The present application relates to the technical field of scale inhibitor production, in particular to a reverse osmosis membrane scale inhibitor for high-iron and high-aluminum sewage treatment and a preparation method thereof; the scale inhibitor is used to solve the problems of poor scale inhibition performance of the existing scale inhibitor and scale deposition on the surface of the reverse osmosis membrane; firstly, amino butyric acid hydroxamic acid and amino phenyl vinyl-8-hydroxyquinoline are synthesized, and then iminodiacetic acid groups of chelating resin are respectively reacted with amino groups in the amino butyric acid hydroxamic acid and the amino phenyl vinyl-8-hydroxyquinoline to obtain chelating resin modified by hydroxamic acid groups and 8-hydroxyquinolyl groups; the hydroxamic acid groups form stable chelates with iron ions and aluminum ions through six-toothed octahedral complex structures; the 8-hydroxyquinolyl groups form five-membered ring chelates through hydroxyl oxygen and quinoline ring nitrogen atoms, have chelating capacity for aluminum ions and iron ions, inhibit the generation of membrane surface scale and organic deposits, and keep the membrane surface clean.