Abstract Increased application of organic compounds, mainly in form of synthetic resins, used as binders for moulding and core sands in metal casting, may have an adverse effect on the environment and work conditions in foundry plants. In this article we focused on the identification of the degradation products formed during laboratory scale simulation of complex thermal degradation of commercial binder. For our investigation we have chosen the phenol-formaldehyde based resin hardened by a mixture of organic esters (PFRE) as it is widely used in the core and mould sand technology. The identified degradation products obtained during the experiments varied depending on mechanism used for pyrolysis. In the “slow” evaluation, simple compounds such as: CO, CO2, NH3, H2O, phenol and CH4 were generated. Meanwhile, during the “flash” pyrolysis (500, 700, 900 and 1100 °C), mainly phenol and its methyl and ethyl derivatives as well as benzene were released. It was determined that the pyrolysis products and their ratio depended on the temperature during the degradation process.

中文翻译：

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有机酯固化碱性酚醛树脂的热解：产品鉴定

摘要 有机化合物（主要以合成树脂的形式）在金属铸造中用作型砂和芯砂的粘合剂的应用越来越多，可能对铸造厂的环境和工作条件产生不利影响。在本文中，我们重点介绍了在实验室规模模拟商业粘合剂复杂热降解过程中形成的降解产物的鉴定。在我们的研究中，我们选择了由有机酯混合物 (PFRE) 硬化的酚醛基树脂，因为它广泛用于型芯和型砂技术。在实验过程中获得的已识别降解产物因用于热解的机制而异。在“缓慢”评估中，产生了简单的化合物，例如：CO、CO2、NH3、H2O、苯酚和 CH4。同时，在“闪蒸”热解过程中（500、700、900 和 1100 °C)，主要释放苯酚及其甲基和乙基衍生物以及苯。确定热解产物及其比例取决于降解过程中的温度。