宽温域自粘结复合材料的量子化学研究及应用

Quantum Chemistry Study and Application of Self-adhesive Composites with Wide Temperature Range

本文采用量子化学的研究方法,建立了复合材料组分间相互作用的量子化学模型,计算了纳米复合材料悬浮液的振荡光谱和结合能。通过红外光谱、DSC和TGA等,分析了复合材料的结构、固化行为、热稳定性和降解动力学,研究了纳米复合粉体(M)、环氧树脂(E)和胺类固化剂(P)之间力学、形态和热性能的协同作用。制备了具有不同含量纳米复合粉体的环氧树脂粘合剂,结果发现,用纳米粉体改性后的粘合体系的热稳定性得到了改善,常态和热态下剥离强度显著提高。

The quantum chemical model of the interaction between the components of the nanocomposite was established by using the method of quantum chemistry in this paper.The oscillating spectrum and binding energy of the nanocomposite suspension were calculated.The structure,curing behavior,thermal stability and degradation kinetics of the composites were analyzed by infrared spectrum,DSC and TGA.The synergistic effects of mechanical,morphological and thermal properties among nanocomposite powder(M),epoxy resin(E)and amine curing agent(P)were studied.Epoxy resin adhesives with different contents of nanocomposite powders were prepared.It was found that the thermal stability of the adhesive system was improved,the shear and T-style peel strength under normal and hot conditions was significantly improved after modification.