反相气相色谱法研究PET聚醚黏合剂的表面性质  

Study on surface properties of PET polyether binder by inverse gas chromatography

作　　者：徐胜良[1] 胡伟[1] 章园园[1] 蔡如琳[1] 黄志萍[1] 周文静[2] 

机构地区：[1]中国航天科技集团公司四院四十二所,湖北襄阳441003 [2]西安近代化学研究所,陕西西安710065

出　　处：《化学推进剂与高分子材料》2014年第4期86-89,共4页Chemical Propellants & Polymeric Materials

摘　　要：采用反相气相色谱技术(IGC)研究了端羟基环氧乙烷–四氢呋喃共聚醚(PET)黏合剂的表面性质。结果表明,PET的表面色散分量在323、333、343、353、363和373 K下的数值分别为42.30、41.19、40.51、39.72、38.89和38.34 kJ/mol,且随着温度升高而线性降低。实验发现,PET黏合剂表面显强的Lewis碱性,其表面Lewis酸常数Ka为0.032,碱常数为0.40。The surface properties of hydroxyl-terminated ethylene oxide-tetrahydrofuran co-polyether （PET） binder were investigated by using inverse gas chromatography （IGC）. The results show that the surface dispersion components of PET are respectively 42.30, 41.19, 40.51, 39.72, 38.89 and 38.34 kJ/mol at 323.15, 333.15, 343.15, 353.15, 363.15 and 373.15 K, and they linearly drop with the increase of temperature. It is found by experiment that the surface of PET binder shows strong Lewis basicity. The surface Lewis acid constant Ka is 0.032, the base constant is 0.40.

关 键 词：端羟基环氧乙烷-四氢呋喃共聚醚 反相气相色谱技术 表面性质 色散分量 酸碱常数 

分 类 号：O657.71[理学—分析化学]