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The Mechanism of Transition of Coals to the Plastic State

机译：煤向可塑性转变的机理

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In the journal Coke and Chemistry (Koks i Khimiya) there have recently been published several papers devoted to the problems of the mechanism of transition of coals to the plastic state. In our opinion, a number of new important propositions have been advanced concerning the model of the two-phase structure of coal [1-5]. In short, the essence of these propositions is that coal organic mass (COM) is composed of a high-molecular phase, which is a spatial (three-dimensional) system of covalently bonded aromatic and hydroaromatic network fragments and also of a large number of cross-linked fragments, and a molecular phase, which is a mixture of more than 300 individual compounds with mass numbers ranging mostly from 200 to 400 amu in pores of the high-molecular phase. These compounds are held by various forces of intermolecular interaction [1]. Hence, the observed two peaks of the fluidity of coal organic matter (COM) is explained by the authors as follows: the appearance of the first peak is due to the fusion of the "molecular phase" and the second peak to the degradation of the "high-molecular phase".If we agree with the authors of the papers mentioned, then two propositions seem to be of significance - coals are inhomogeneous with respect to their composition and, second, while being a mixture of various organic substances (ignoring the mineral part), coals consist of a low-molecular constituent (the "molecular phase" according to the authors cited) and a high-molecular constituent (the "high-molecular phase").
机译：最近在《可口可乐和化学》（Koks i Khimiya）杂志上发表了几篇论文，这些论文专门研究了煤向可塑态转变的机理。我们认为，关于煤的两相结构的模型已经提出了许多新的重要命题[1-5]。简而言之，这些命题的本质是煤有机质（COM）由高分子相组成，该分子相是共价键合的芳族和氢芳族网络片段的空间（三维）系统，并且还包含大量交联的片段和一个分子相，它是高分子相的孔中300多种质量数范围从200至400 amu的单个化合物的混合物。这些化合物被分子间相互作用的各种力所保持[1]。因此，作者解释了观察到的煤有机质（COM）流动性的两个峰：第一个峰的出现是由于“分子相”的融合，而第二个峰则是由于有机相的降解。如果我们同意上述论文的作者，那么两个命题似乎很重要-煤的成分不均匀，其次，它是各种有机物质的混合物（忽略了矿物部分），煤由低分子成分（根据引用的作者所述为“分子相”）和高分子成分（“高分子相”）组成。

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