Dynamics of Formation of Asphalt Microstructure According to Modulated Differential Scanning Calorimetry Data

被引：0
作者：
I. N. Frolov
T. N. Yusupova
M. A. Ziganshin
E. S. Okhotnikova
A. A. Firsin
机构：
[1] Kazan National Research Technological University,Arbuzov Institute of Organic and Physical Chemistry
[2] Russian Academy of Sciences,undefined
[3] Kazan Federal University,undefined
来源：
Petroleum Chemistry | 2017年 / 57卷
关键词：
asphalt; modulated DSC;
D O I：
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中图分类号：
学科分类号：
摘要：
The structural thermal properties of petroleum asphalts (using the BNK 40/180 brand as an example) have been analyzed by modulated differential scanning calorimetry (DSC). The method is based on separation of the overlapping reversing and nonreversing structural thermal processes upon temperature modulation of a heat flow, which makes it possible to observe, analyze, and quantitatively assess the thermal effects that are displayed on the temperature curves of conventional DSC. The method ensures the separation of crystallization (melting) processes and glass transitions. The temporal dynamics of the formation of asphalt microstructure is determined by rapid (shorter than 1 h), medium (up to 16 h), and slow (longer than 16 h) thermal processes of crystallization of paraffin hydrocarbons (HCs) of various structures and separation of asphaltenes into an individual nanosized phase.
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页码：1002 / 1006
页数：4
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