Additive composition and use thereof

Abstract

The present invention provides an additive composition and use thereof. The additive composition includes, in parts by mass, the following components: 65-84 parts of aluminum diethylphosphinate, 7-16 parts of melamine polyphosphate, 7.5-16 parts of a flame retardant synergist, and 0.1-1 part of aluminum alkylphosphite; and a mass percentage content of water in the additive composition is 0.4%-0.6%. According to the present invention, through the design and mutual synergy of the components and the control of the water content, the additive composition has excellent flame retardant performance, stability, and precipitation resistance. The additive composition is used for flame retardation of polymer systems, especially enabling that a polyamide composition containing the same has excellent flame retardant performance, flame retardant stability, and resistance to high temperature and high humidity, and still maintains excellent flame retardance after high-temperature and high-humidity aging. Moreover, the problem of additive precipitation is inhibited or avoided, thereby greatly improving comprehensive performance of flame-retardant polyamides. 20 26 20 19 06 12 M ar 2 02 6 2 0 2 6 2 0 1 9 0 6 1 2 M a r 2 0 2 6 2 0 2 6 2 0 1 9 0 6 1 2 M a r 2 0 2 6