Composite nano material modified emulsion and its preparation method

Abstract

A composite nano material modified acrylate emulsion is prepared through proportionally mixing aluminium oxide nanoparticles with nano-class silica gel, ultrasonic dispersing, and proportionally mixing the composite nano material with acrylate emulsion for modifying it. It has the greatly improved stability, and resistance to water and alkali.

Description

technical field [0001] The invention relates to an emulsion modified by a composite nano material and a preparation method thereof. Background technique [0002] To modify the emulsion with nanomaterials, nanosols or nanopowders are usually used. To modify the emulsion with nano-sol such as silica sol, physical compounding is generally adopted, that is, the emulsion and nano-sol are mixed under mechanical stirring. Although the emulsion modified in this way has improved film hardness, back tackiness, air permeability and adhesion, etc., it cannot fully exert the modification effect of nano-sol due to physical compounding, and the emulsion after modification is stable in storage. Sex is a problem. In addition, chemical compounding is also used, that is, nano-sol participates in the polymerization reaction of organic monomers, and a certain amount of chemical bonds are formed between nano-sol and latex particles, which improves the compatibility between the two, thereby impr...

AI Technical Summary

Problems solved by technology

However, due to the large specific surface area and high surface energy of nano-powders, on the one hand, it is easy to produce a large amount of residue or cause the emulsion to gel when the emulsion is synthesized; on the other hand, it is difficult to form an ideal core-shell structure emulsion.