The epoxy resin has a limiting oxygen index (LOI) measured according to standard ASTM 2863, which is at least 28%, if the resin comprises at least a silsesquioxane compound (POSS), or at least 36%, if the resin is obtainable by curing an epoxy precursor formulation with an hardening agent which is an aromatic organo-phosphorous compound, preferably an organophosphine oxide of general formula R3PO, wherein at least two R moieties are amino-phenyl and one R moiety is alkyl, phenyl or amino-phenyl, wherein each phenyl ring may have independently one or more electrophile substituents.
根据标准 ASTM 2863 测量,环氧
树脂的极限氧指数(LOI)至少为 28%(如果该
树脂至少包含
硅倍半氧 化物(POSS)),或者至少为 36%(如果该
树脂可通过用芳香族有机
磷化合物固化剂固化环氧前体 配方获得)、最好是通式为 R3PO 的有机氧化膦,其中至少两个 R 基为
氨基苯基,一个 R 基为烷基、苯基或
氨基苯基,每个苯基环可独立具有一个或多个亲电取代基。