Thermal behaviour of bismaleimides,allyl nadic-imides and their blends

摘要

Synthesis and characterization of bis(4-malemindophenyl) sulphone (B) and its Michael adducts E and F,prepared by reacting 1 mol of B with 0.33 mols of 4,4'-diaminophenyl ether and 9,-bis(4-aminophenyl)fluorene is described.Curing characteristics of these resins and bis(4-llyl nadicimidophenyl) methane (S) and 1,6-diallyl nadicimidohexane (V) were studied in static air atmosphere by differential scanning calorimetry.Curing temperatures depended on the structure of the resins and highes curing temperatures were observed in S and V samples.Thermal behaviour of blends of B,E,and F with S and V resins was studied as a function of blends composition.Thermogravimetric analysis of curred resin blends showed an improvement in thermal stability.