Pha plant-based composite aqueous emulsion, and preparation method and application thereof

Abstract

The application discloses a PHA plant-based composite water-based emulsion and a preparation method and application thereof, and belongs to the technical field of water-based polymer dispersions and coating layers. The composite water-based emulsion takes water as a continuous phase, and takes dispersed particles containing a polyhydroxy fatty acid ester component and a rosin-based component as a dispersed phase; the dry solid mass ratio of the polyhydroxy fatty acid ester component to the rosin-based component is 1:4 to 4:1; the solid content is 10 to 70 wt%; the dispersed particle D 50 0.20 to 0.90 microns, D 90 ≤4.0 microns; an emulsion stabilizing system is constructed by means of internal emulsification ion group and rosin-based reactive emulsifier, and the dosage of additional non-fluorine surfactant is 0 to 0.5 wt%. The application can be used for preparing protective coating layers on the surfaces of metals, plastics and composite materials.

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