ADDITIVE COMPOSITION FOR POLYMER, METHOD FOR PREPARING SAME, AND FLAME RETARDANT THERMOPLASTIC POLYMER MOLDING MATERIAL CONSISTING OF SAME

摘要

Disclosed are an additive composition for polymer, a method for preparing same, and a flame retardant thermoplastic polymer molding material consisting of same. The additive composition for polymer comprises the following components: component A, namely 80 wt%-99.99 wt% of dialkyl phosphinate with a structure as shown in formula (I); component B, namely 0.001 wt%-0.5 wt% chloride with weight content of chlorine element in the total additive as 60-800 ppm; component C, namely 0wt%-20wt% of alkyl phosphonate with a structure as shown in formula (II); component D, namely 0 wt%-0.9 wt% of phosphite with a structure as shown in formula (III), based on 100 wt% in total, wherein the weight fractions of the components C and D are not 0 wt% at the same time. The additive of the invention is applied to the polymer, so that the corrosion degree of the flame retardant polymer to a mixing combined device screw is greatly reduced, the energy and labor loss caused by frequently replacing the screw in a processing process is further reduced while the equipment processing cost is lowered; the whiteness of the polymer part obtained by extrusion molding is superior to that of the polymer part modified by normal dialkyl phosphinate.