Efficient preparation method for nano-scale solid powder

Abstract

The invention relates to the field of nano-material preparation, and particularly relates to a method for efficiently grinding a nano-material. The nano-scale solid powder prepared by an efficient preparation method for nano-scale solid powder is a nano-scale solid oxide powder for preparing a grinding aid, a grinding aid raw material is modified to improve the hydrophobicity and then is used as a grinding aid, and the grinding aid raw material and a target substance are the same substance; a raw material slurry to be grinded is configured; the raw material slurry is poured in a grinding machine and cyclically grinded in a manner of wet-method grinding, and finally separated, filtered, cleaned and dried to obtain the nano-scale solid oxide powder. According to the method disclosed by the invention, the modified nano-scale powder with the hydrophobicity is added as the grinding aid during the wet-method grinding, and thus the grinding efficiency is increased, meanwhile, the grinding aid and the grinded substance are the same, and an additional filtering and cleaning step is not needed, and thus further simplifying the whole processing technique, greatly shortening the time needed by production and processing, reducing the production cost, and increasing the yield.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation, in particular to a method for efficiently grinding nanomaterials. Background technique [0002] Nano-scale inorganic oxides with a particle size below 100 nanometers, such as nano-silicon dioxide and nano-titanium dioxide, are widely used because of their particle characteristics. For example, nano-silica has optical properties against ultraviolet rays, can improve the anti-aging, strength and chemical resistance of other materials, is non-toxic, tasteless, and pollution-free, and has a spherical microstructure. Medium and new materials have broad application prospects; and nano-titanium dioxide is a white loose powder. It has anti-thread, antibacterial, self-cleaning, anti-aging properties, has the function of shielding ultraviolet rays, and has good dispersion and weather resistance. It can be used in the fields of cosmetics, functional fibers, plastics, coatings, paints, etc., as an u...

AI Technical Summary

Problems solved by technology

[0003] Because of the above advantages, there is a great demand for nano-particles such as nano-silicon dioxide and nano-titanium dioxide in the existing material chemical industry; wet grinding is the most common method for processing nano-materials. The method uses a grinder and a medium ball to repeatedly grind the raw material in an aqueous solution to obtain the final nanomaterial. This repeated grinding process requires a lot of time and energy; and in order to improve the quality of the final material, the prior art Chinese patent CN103466645A discloses a preparation method of wet-grinding nano-scale silicon dioxide. When processing nano-silica, the method adopts a three-stage step-by-step wet grinding method to obtain nano-scale silicon dioxide materials. Although the final material The quality has reached a higher standard, but more time is spent in the processing process, making the cost of nanomaterials high, which is not conducive to the promotion and application of such nanomaterials, so a more novel and efficient processing method is needed