Novel Epoxy Curing Agents from Epoxy Resin Based Dialdehyde Derivative

摘要

A series of epoxy based curing agents were synthesised by the reaction of dialdehyde derivative 1,1'-(1-methylethylidene)di[4-{1-imino-4-benzaldehyde)-2-propanolyloxy}]benzene of epoxy resin with a different aromatic diamines.The dialdehyde derivative was synthesised by the reaction of epoxy resin (DEGBA)with 4-amino benzaldehyde (4-ABA) in presence of triethyl amine (1% by wt.Of resin)as a catalyst.All this curing agents were characterised by their number average molecular weight (Mn),elemental analyses and infrared spectrophotometry(IR).Ss produced,polymers may act as a epoxy curing agent,the thermal characteristics of the synthesised PK-epoxy resin system were investigated by means of differential scanning calorimetry(DSC) and thermogravimetric analysis (TGA).