Ultrafine modified hydromagnesite composite powder, and preparation method and application thereof

Abstract

The present invention provides an ultrafine modified hydromagnesite powder, and a preparation method and application thereof. The preparation method comprises the following steps: drying ultrafine hydromagnesite, then adding a certain amount of organic dispersion reagent, isocyanate compound and catalyst, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain powder 1; taking the powder 1, a certain amount of organic dispersion reagent and fatty amine, stirring at a certain temperature for a period of time, filtering, washing and drying to obtain the ultrafine modified hydromagnesite powder. The powder is mixed with polyethylene and an auxiliary agent, and extruded for granulation at 160-200° C. to obtain polyethylene composite material. The material has excellent tensile strength and flame retardant property.

Dependencies are inferred from the claim text.