Glass transition processes occurring in the wide heavy fraction of Kumkolsk oil and its six narrow heavy fractions across the temperature range of 150–370 K were investigated by differential scanning calorimetry. Glass transition in the narrow fractions under study undergoes at different temperatures. Two of the most widely used equations that relate the glass transition temperature of a mixture (wide heavy fraction) and its components (narrow heavy fractions) were tested, both linear additive and inverse-additive relationships.

中文翻译：

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油馏分的玻璃化转变

通过差示扫描量热法研究了在 150-370 K 温度范围内发生在库姆科尔斯克油的宽重质馏分及其六个窄重质馏分中的玻璃化转变过程。所研究的窄部分的玻璃化转变在不同的温度下发生。测试了两个最广泛使用的方程式，它们与混合物（宽重馏分）及其组分（窄重馏分）的玻璃化转变温度相关，包括线性加法和反加法关系。