| abstract |
The invention relates to a flame retardant composition and its application, a PBT composite material and a preparation method thereof. Wherein, the components of the flame retardant composition include: 55wt%-65wt% aluminum diethylphosphinate, 15wt%-26wt% melamine polyphosphate, 10wt%-15wt% melamine cyanurate, 4wt%-8wt% Organically modified montmorillonite and 0-5wt% aluminum phosphite. When the flame retardant composition is melt-mixed with main materials such as PBT to prepare a flame retardant material, the obtained flame retardant material can be decomposed to form a coke layer during the combustion process. The nitrogen-containing compound in the combustion composition also has the functions of foaming and coke enhancement, and the aluminum phosphite can play a synergistic flame retardant and whitening effect, so that the flame retardant material prepared has good flame retardancy and can be maintained well. mechanical properties. |