Preparation method for modifying nano particle emulsion by activated sludge

Abstract

The invention discloses a preparation method for modifying nano particle emulsion by activated sludge, and belongs to the technical field of nano particle emulsion preparation. Lard and coking wastewater are mixed to carry out hydrophobic modification on inorganic nano particles under the function of the activated sludge which is rich in nitrobacteria, surfactant is used for modifying the surfaces of the inorganic nano particles, and the inorganic nano particles are coated by acrylate to obtain the nano particle emulsion. The coking wastewater and animal fat are used for modifying nano silicon dioxide under the function of the nitrobacteria in the activated sludge, the amount of the surface hydrophobicity nitro and ester groups is increased, the nano particle emulsion has good water resistance after being compounded with the acrylate, the problems of low film strength and poor water resistance of the common nano particle emulsion are solved, and the defect that the film is likely to fall since inorganic fillers are likely to be agglomerated and particle diameter dispersion is uneven can be made up.

Description

technical field [0001] The invention relates to a method for preparing nanoparticle emulsion modified by activated sludge, and belongs to the technical field of nanoparticle emulsion preparation. Background technique [0002] Nanomaterials have become one of the research hotspots in the field of material science in recent years because of their many unique properties. It has become the research focus of all countries in the world. Although the research on inorganic nanoparticle / emulsion composite materials in my country started relatively late, it has developed rapidly in recent years. Most emulsions are linear structure polymers. Although the polymer chains can form weak Physical cross-linking, but lack of strong chemical cross-linking, and the introduction of hydrophilic groups and emulsifiers lead to inherent deficiencies such as low film strength and poor water resistance. Emulsifiers are easy to migrate and foam. The application and development of nanoparticle emulsion ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to aim at the low strength and poor water resistance of the coating film caused by the introduction of hydrophilic groups and emulsifiers in the current common nanoparticle emulsions, which are coated and modified with resin systems such as inorganic fillers, which are prone to agglomeration, Due to the disadvantages of uneven particle size dispersion, poor modification effect, and easy peeling of the coating film, it provides a method for hydrophobic modification of inorganic nanoparticles by mixing lard and coking wastewater under the action of activated sludge rich in nitrifying bacteria. , and modify its surface with a surfactant, and prepare a nanoparticle emulsion after coating with acrylate

The present invention modifies nano-silica by coking waste water and animal oil under the action of nitrifying bacteria in activated sludge, increasing the number of hydrophobic nitro and ester groups on its surface, and compounding with acrylate Good water resistance, not only solves the problems of low strength and poor water resistance of the common nanoparticle emulsion coating film, but also makes up for the defects that the inorganic filler is easy to agglomerate and the particle size dispersion is uneven, which leads to the defect that the coating film is easy to fall off