【摘要】 采用气相反相色谱技术(IGC)研究了端羟基聚丁二烯(HTPB)粘合剂的表面物理化学性质。结果表明,HTPB的色散分量随着温度的升高而降低,总表面自由能表现出与色散分量相一致的规律。与聚乙烯相比,HTPB具有更高的表面自由能,因为HTPB表面含有羟基。极性分量以及酸、碱分量随着温度的升高而逐渐增大,酸性分量比碱性分量大,且对温度更敏感、增大的更快,这表明HTPB显示较强的布伦斯特酸性。更多还原

【Abstract】 The surface physicochemical properties of hydroxyl terminated polybutadiene(HTPB)were studied by means of inverse gas chromatography(IGC).The dispersive component of the surface free energy of HTPB,as well as the total surface free energy decreases as the temperature increases.Compared with the polyethylene,HTPB has higher surface free energy because there are some hydroxyl groups on the surface of the HTPB molecule.While the proton donor and the proton acceptor components increase with the increase of the temperature,the proton donor one is more sensitive to the temperature and increases more rapidly.The results show that HTPB has higher dispersive component and shows stronger Brnsted acidity.更多还原