Abstract

The thermal stability and composition of the gas phase of Sovol technical mixture of polychlorobiphenyls was studied by synchronous thermal analysis and mass spectrometry in comparison with the derivatives synthesized by the reaction of the congeners with sodium methoxide or with polyethylene glycol in the presence of alkali. The obtained mixtures of methoxy + hydroxy + methoxyhydroxy or hydroxy + poly(ethylene glycol)oxy derivatives of polychlorobiphenyls are less stable thermally than the congeners of the Sovol mixture. In pyrolysis of a mixture of methoxy, hydroxy, and methoxyhydroxy derivatives, the vaporization is accompanied by decomposition with the formation of simple volatile substances. No vaporization is observed in the course of oxidative thermal decomposition of a mixture of hydroxy and poly(ethylene glycol)oxy derivatives. Thermal decomposition of the derivatives requires lower power consumption compared to polychlorobiphenyls and is characterized by decreased emission of hazardous chlorinated compounds.

中文翻译：

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聚氯联苯及其衍生物的热分解

摘要

通过同步热分析和质谱，与同类物与甲醇钠或与聚乙二醇在碱存在下反应合成的衍生物进行了比较，通过同步热分析和质谱研究了Sovol多氯联苯技术混合物的Sovol技术的气相的热稳定性和气相组成。所获得的多氯联苯的甲氧基+羟基+甲氧基羟基或羟基+聚（乙二醇）氧基衍生物的混合物比Sovol混合物的同类物热稳定性差。在甲氧基，羟基和甲氧基羟基衍生物的混合物的热解中，汽化伴随分解并形成简单的挥发性物质。在羟基和聚（乙二醇）氧基衍生物的混合物的氧化热分解过程中未观察到汽化。