The microscale combustion calorimetry study of polymer mixture pyrolysis is presented. Binary mixtures of HDPE with a number of massively produced polymers (LDPE, PET, PS, PP, PC, PVC, PMMA), binary PC-PS and PMMA-PVC mixtures, and the ternary mixture composed of HDPE, PC, and PS are considered. The extent of interaction between the mixture components in pyrolysis is assessed by comparing the shapes of the measured temperature dependencies of the heat release rate in volatile oxidation with those for the curves obtained by the mass-weighted summation of the individual contributions of the pure polymers constituting the mixture. The strongest interaction is observed in HDPE-PET, HDPE-PS, HDPE-PS-PC, and in PMMA-PVC mixtures. A destabilizing interaction occurs in mixtures containing polyethylene and polystyrene, while the presence of polyvinylchloride has a stabilizing effect.

In the binary mixtures, no clear correlation of the dependence of the conversion-averaged apparent activation energy (obtained by the iso-conversional method of Friedman) on the component proportion has been observed. In HDPE-PET mixture, in which the temperatures of peak pyrolysis rates are separated, the dependence of the apparent activation energy on conversion is interpreted in terms of the dependencies derived for pyrolysis of the individual components.

Except for PMMA-PVC mixtures, in all binary mixtures considered in this work the heat of volatile combustion and the char yield were found to be additive quantities and varied almost linearly with the variation of the component mass fractions. Dissimilar to that, the PMMA-PVC mixtures produced a higher amount of charring residue and a lower heat of combustion of volatiles compared to the component-based predictions assuming additivity.

提出了聚合物混合物热解的微型燃烧量热法研究。HDPE与大量大量生产的聚合物（LDPE，PET，PS，PP，PC，PVC，PMMA）的二元混合物，PC-PS和PMMA-PVC二元混合物以及由HDPE，PC和PS组成的三元混合物是经过考虑的。通过比较测得的挥发性氧化中放热速率的温度依赖性形状与通过质量加权求和得到的纯聚合物的各个贡献的质量曲线得出的曲线的关系，可以评估热解过程中混合物组分之间的相互作用程度。混合物。在HDPE-PET，HDPE-PS，HDPE-PS-PC和PMMA-PVC混合物中观察到最强的相互作用。含有聚乙烯和聚苯乙烯的混合物会发生破坏稳定的相互作用，

在二元混合物中，未观察到转化平均表观活化能（通过弗里德曼的等转化方法获得）对组分比例的依赖性的明确关联。在HDPE-PET混合物中，最高热解速率的温度是分开的，表观活化能对转化率的依赖性是根据对各个组分进行热解所得出的依赖性来解释的。

除PMMA-PVC混合物外，在这项工作中考虑的所有二元混合物中，挥发性燃烧热和焦炭产率均为添加量，并且随组分质量分数的变化而呈线性变化。与此不同的是，与基于加和性的基于组分的预测相比，PMMA-PVC混合物产生大量的炭化残留物和较低的挥发物燃烧热。