The invention provides a preparation method of flame-retardant isatis root PET masterbatch, comprising the steps of preparing isatis root extract, preparing modified isatis root extract, loading modified substances, and preparing isatis root PET masterbatch. The modified substance loading comprises preparing a loading agent, mixing with modified substances, heat treatment, and vacuum distillation. The raw materials for preparing the loading agent comprise diatomite, superfine bamboo charcoal powder, zinc stearate, and sodium di-sec-octyl maleate sulfonate. The flame-retardant isatis root PET masterbatch prepared by the invention has good loading effect of isatis root extract, excellent antibacterial effect, and also has flame retardancy and washing resistance.
Area Code: CN
Application Number: CN202010612236.6
