文献类型：期刊文献

中文题名：^1H—NMR和IR对道路沥青老化过程的研究

英文题名：Study on the Aging Process of Paving Asphalt with 1HNMR and IR

作者：水恒福[1];沈本贤[1];高晋生[1];周华[2]

机构：[1]华东理工大学石油加工研究所;[2]马鞍山职业教育中心

年份：1998

卷号：24

期号：4

起止页码：405

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：核磁共振;红外光谱;老化;机理;道路沥青

外文关键词：magnetic spectrometers; infrared spectrometry; aging; mechanism; paving asphalts

摘要：研究了两种不同结构道路沥青Ｓｈｅｌ７０和ＰＡ１００的老化过程。发现沥青的组成和结构对其老化性能有较大影响：具有较长烷基侧链的道路沥青，在一定的温度下，烷基侧链易于断裂形成自由基而引发氧化反应；沥青各组分结构上的不连续性导致其抗老化性能较差。在老化过程中，由于氧的介入生成了酮和亚砜等含氧官能团，使得沥青分子间相互作用力增加，破坏了原有沥青的组成与结构，导致沥青的针入度下降，各种性质发生明显变化。
The aging process of two paving asphalts with different structure Shell 70 and PA 100 has been studied in this paper. The penetration and penetration index of paving asphalts decreased visibly with the aging going out. The composition and structure of paving asphalts have large influence on the aging performance of paving asphalts. The alkyl side chain was easy to break and form free radical that aroused the oxidation reaction for the asphalt with longer alkyl side chain under a certain temperature. The structural discontinuity of asphalts components was one of primary causes of decreasing the aging resistant performance of asphalts. Functional groups such as ketones and sulfoxides were formed during aging of asphalts. Because these functional groups are polain pature, the molecular interaction of asphalts increases; the composition and the structure of asphalts are destroyed, the penetration decreases and the properties change.