Disclosed are a phosphaphenanthrene-structure reactive flame retardant and an application thereof. The preparation method comprises: enabling 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), p-hydroxy benzaldehyde (4-HBA), and 5-aminomethyl-1,3-diphenyl-1,3,5-diphosphonitryl heterocycles to react under a certain condition to obtain the reactive flame retardant with a benzene ring rigid structure containing polyhydroxy. Compared with an ordinary flame retardant, the phosphaphenanthrene-structure reactive flame retardant has the characteristics that polyfunctionality is achieved, the molecular structure is stable, the hydrolysis resistance is better, and less migration in epoxy resin, moreover, the flame retardant property of the epoxy resin can be remarkably improved.
本发明公开了一种
磷菲结构活性阻燃剂及其应用。其制备方法包括:使 9,10-二氢-9-氧杂-10-
磷菲-10-氧化物(
DOPO)、
对羟基苯甲醛(4-HBA)和 5-
氨基甲基-1,3
-二苯基-1,3,5-
二膦酰基杂环在一定条件下反应,得到含多羟基苯环刚性结构的反应型阻燃剂。与普通阻燃剂相比,
磷菲结构反应型阻燃剂具有实现多官能度、分子结构稳定、耐
水解性好、在环氧
树脂中迁移量少等特点,而且环氧
树脂的阻燃性能得到显著提高。