【摘要】 采用反相气相色谱法(IGC)研究了缩水甘油叠氮聚醚(GAP)黏合剂的表面物理化学性质。研究结果表明,GAP的色散分量随着温度的升高而降低,总表面能表现出与色散分量相一致的规律。与聚乙烯相比,GAP的总表面的自由能较高,这主要是因为GAP表面含有羟基和叠氮基团。而极性分量以及酸、碱分量,则随着温度的升高而逐渐增大,酸性分量相对碱性分量对温度更敏感、增大更快,这表明GAP显示更强的布伦斯特酸性。更多还原

【Abstract】 The surface physicochemical properties of GAP were studied by means of inverse gas chromatography(IGC).The results show that the dispersive component of the surface free energy of GAP decreases with increasing temperature and the total surface free energy takes on the consistent character.Compared with polyethylene as a standard sample,GAP has higher surface free energy because there are many hydroxyl groups and azide group in the surface of the GAP molecule.The proton donor and the proton acceptor components increase with the increase of the temperature.And the proton donor one shows more sensitive to the temperature and increases more rapidly,showing that GAP has higher dispersive component and stronger Bro/nsted acidity.更多还原