This invention provides a flame retardant pre-expanded polymer material comprising:
(A) a thermoplastic polymer material;
(B) an organic phosphorus-containing compound; and
(C) a hindered amine having an OR group substituted directly on its N-atom, wherein R is a saturated or unsaturated hydrocarbyl group;
wherein the phosphorus-containing compound (B) is not a phosphoric ester or a phosphate, and wherein the weight ratio (B)/(C) is from 1.9 to 10.
This invention also provides a process for producing the material, and a foamed article prepared by in-mold foaming or extrusion-foaming the material.
本发明提供了一种阻燃预膨化聚合物材料,包括
(A) 热塑性聚合物材料;
(B) 有机
含磷化合物;和
(C) 在其 N 原子上直接取代 OR 基团的受阻胺,其中 R 为饱和或不饱和烃基;
其中
含磷化合物(B)不是
磷酸酯或
磷酸盐,重量比(B)/(C)为 1.9 至 10。
本发明还提供了生产该材料的工艺,以及通过模内发泡或挤出发泡该材料制备的发泡制品。