分别用苯酚(Ph)和壬基酚(NP)与多聚甲醛,对甲基环戊二胺(TAC)进行曼尼希反应,制备出来两种不同结构的甲基环戊二胺型苯并噁嗪分别简称为 TPBZ、TNBZ,然后将两种苯并噁嗪与环氧树脂共混固化并和原料TAC与环氧树脂共混固化比较.用FT-IR、1 H NMR分析了两种苯并噁嗪的化学结构；用DSC对共混固化体系特性进行研究,用 TGA 分析了固化物的热稳定性.结果表明,固化物 TPBZ/EP 的热分解温度比固化物TAC/EP提高32℃,最大失重速率温度提高58℃,700℃残炭率提高11．2％,固化物 TNBZ/EP 的热分解温度比固化物TAC/EP提高42℃,最大失重速率温度提高56℃.
Two different containging-cyclopentana benzoxazine (abbreviated as TPBz and TNBz)were synthe-sized in this paper,and the raw material phenol (Ph)and nonylphenol (NP)were used to take the Mannich re-action with paraformaldehyde and methylcyclopentyl diamine (TAC),respectively.The chemical structure of TPBz and TNBz was characterized by FT-IR and 1 H NMR.Then blending TPBz and TNBz with epoxy resin and curing,which were compared with the blend curing system of material TAC and epoxy resin.The blend charac-teristics of curing system were studied by DSC,and the thermal stability of which was analyzed by TGA.The result demonstrated that the thermal decomposition temperature of TPBz/EP increased 32 ℃ than that of TAC/EP.the temperature of maximum weight loss rate increased 58 ℃,and the carbon residue at 700 ℃ increased 11.2%,respectively.About TNBz/EP,its thermal decomposition temperature increased 42 ℃,and temperature of maximum weight loss rate increase 5 6 ℃.
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