Abstract: The crystalline properties of polyamide 6(PA6)/N一N’一ethylene一his(tctrabromoph-thalimidc)(FPT) blends were investigated by Fouricr transform infrared (FTIR) and differential scannine calorimctry (DSC)，stora}c modules and loss factors were studied with dynamic mechanical thermal analysis. The results show that EPT's accession is advantageous to form a crystal and crystallization at a higher temperature in PA6 and FPT blends. Forming two different hydrogen bonding，the blends exhibit a lower a, relaxation transition peak and a higher α2 relaxation transition peak.

Key words: polyamidc 6, N一N’一ethylene-bis(tctrabromophthalimidc), hydro}cn bonding dynamic mechanical behavior