A flame retardant phosphorus element-containing epoxy resin composition substantially free of halogen, including:
(I) a non-halogenated epoxy resin material selected from:
(A) a non-halogenated phosphorus element-containing epoxy resin;
(B) a mixture of:
(1) a non-halogenated, non-phosphorus element-containing epoxy resin, and
(2) a phosphorus element-containing compound; or
(C) the reaction product of:
(1) a non-halogenated epoxy resin; and
(2) a phosphorus element-containing compound; or
(D) a combination of two or more of components (A) to (C); and
(II) (A) a multi-functional phenolic crosslinking agent having a hydroxy functionality of at least 2; (B) a material which forms a multifunctional phenolic crosslinking agent having a hydroxy functionality of at least 2, upon heating or (C) a mixture of components (A) and (B); in an amount of from about 50% to about 150% of the stoichiometric amount needed to cure the epoxy resin. Electrical laminate circuit boards having reduced flammability may be made from these compositions.
一种阻燃性含
磷元素环氧
树脂组合物,基本上不含卤素,包括
(I) 选自以下材料的无卤环氧
树脂材料
(A) 无卤素含
磷环氧
树脂;
(B) 以下物质的混合物
(1) 无卤素、不含
磷元素的环氧
树脂,和
(2) 含
磷元素化合物;或
(C) 以下物质的反应产物
(1) 非卤化环氧
树脂;和
(2) 含
磷元素化合物;或
(D) 成分(A)至(C)中兩個或以上的組合;及
(II) (A) 具有至少 2 个羟基官能度的多功能
酚醛
交联剂;(B) 在加热时形成 具有至少 2 个羟基官能度的多功能
酚醛
交联剂的材料;或 (C) 成分(A)和(B)的混合物;其用量为固化环氧
树脂所需的
化学计量 量的约 50%至约 150%。用这些成分可制成易燃性降低的电气层压电路板。