不同氢键对聚酰胺6结晶与动态力学性能的影响

Effect of Different Hydrogen Bonding in Polyamide 6/N-N′-ethylene-bis(tetrabromophthalimide)on Its Crystalline and Dynamical Mechanical Behavior

采用变温红外光谱、差示扫描量热仪研究了聚酰胺6(PA6)/N,N-乙撑双四溴邻苯二甲酰亚胺(EPT)体系的结晶性能,通过动态力学热分析仪考察了该体系的储能模量与损耗因子。实验结果表明,EPT 的加入有利于 PA6/EPT 体系的α晶型形成,使结晶温度提高,并形成两种强弱不同的氢键作用,体系表现出一个较低的α_1松弛峰和一个较高的α_2松弛峰。

The crystalline properties of polyamide 6 （PA6） / N- N＇- ethylene -bis （tetrabromophthalimide） （EPT） blends were investigated by Fourier transform infrared （FTIR） and differential scanning calorimetry （DSC）, storage modulus 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 EPT blends. Forming two different hydrogen bonding, the blends exhibit a lower α1 relaxation transition peak and a higher α2 relaxation transition peak.