Preparation method for nano-zinc particles

Abstract

The invention discloses a preparation method for nano-zinc particles. The method includes the following steps that (1) solvents are added to nano-zinc precursors to obtain precursor liquid; (2) the precursor liquid obtained through the step (1) is poured into an ultrasonic reaction tank, ultrasonic irradiation is conducted, and a cavitation corrosion effect is generated accordingly; (3) macromolecule-type interfacial agents, reducing agents and stabilizing agents are added to a reaction hotspot; (4) after the reaction is completed, zinc particles generated by peeling off in the previous steps are collected; (5) the zinc particles obtained in the step (4) are guided into a vacuum high-temperature drying oven and are recrystallized, so that the nano-zinc particles are obtained. The nano-zinc particles obtained through the technology are used for disinfection and sterilization and are 20 times higher than nano-zinc oxide in the traditional technology in effect, and 99.9% of germs, fungi and the like can be killed with only low dosage of the nano-zinc particles; in the production process, no waste water or waste is generated, production cost is low, and meanwhile the nano-zinc particles are highly active and overcome the defect that traditional nano-zinc is instable or prone to losing sterilization ability. The nano-zinc particles obtained through the technology are easy to diffuse and capable of being added to coating of various types through simple mixing equipment.

Description

technical field [0001] The invention relates to the technical field of nano metal materials, and discloses a preparation method of nano zinc particles. Background technique [0002] Nano-zinc material has good thermal stability, can adsorb, stabilize and kill bacteria, and has the characteristics of good antibacterial effect, long-term effect, high safety, and price competition. Toxicity, skin irritation, and sensitivity experiments have proved that the product has high safety and long-term antibacterial ability, and can be used in food, medicine, health care products, cosmetics, daily necessities, textile fibers, fish husbandry, agricultural planting and other industries in the future. Various products with bactericidal, bacteriostatic and antibacterial effects are prepared. [0003] Traditional nano-metal (zinc) powder is dispersed in resin coatings, and usually needs to be dispersed by mechanical grinding. The nano-grinding and dispersing machine has disadvantages such a...

AI Technical Summary

Problems solved by technology

[0003] Traditional nano-metal (zinc) powder is dispersed in resin coatings, and usually needs to be dispersed by mechanical grinding. The nano-grinding and dispersing machine has disadvantages such as high cost, high loss, and high maintenance cost. Therefore, the application of nano-metal powder is difficult.

The nano-zinc of traditional technology is very easy to oxidize, that is, nano-zinc oxide (the original nano-zinc powder, whose surface has changed its active structure, converted to an oxidized state, passivated and inactive zinc oxide), has low sterilization rate and poor persistence , high cost, etc., it is difficult to realize industrial application