Reworked synthetic polymers (RSPs) are industrial raw materials obtained from waste synthetic polymer (WSP) through physical or chemical means. Different reworked synthetic polymers have different pyrolysis characteristics and synergistic reactions during co-pyrolysis process. The effect of reworked polyamide 6 (PA6), thermoplastic elastomer (TPE), black polypropylene (PP1) and green polypropylene (PP2) co-pyrolysis on the yield and quality of pyrolysis products has been conducted. The results show that co-pyrolysis promotes the degradation of RSPs into more gases. Co-pyrolysis improves the light component of liquid oils and reduces the O content, which is beneficial for liquid fuels. Except for TPE + PP2, co-pyrolysis of RSPs increased di-aromatics, poly-aromatics and aromatic compounds. TPE + PP2 and PP1+PP2 produced high aliphatic compounds including the long chain aliphatic compounds without sufficient degradation, which resulted in the contents of over C₂₀ were high. In the pyrolysis gases, the relative content of H₂ was increased in all mixed RSPs co-pyrolysis, which can be used as clean fuels. The X-ray diffraction (XRD) analysis shown that new components were found and old components disappeared in co-pyrolysis, indicating chemical reaction had occurred between two different types of RSPs.

返工合成聚合物（RSP）是通过物理或化学手段从废合成聚合物（WSP）中获得的工业原料。在共热解过程中，不同的返工合成聚合物具有不同的热解特性和协同反应。进行了返工聚酰胺6（PA6），热塑性弹性体（TPE），黑色聚丙烯（PP1）和绿色聚丙烯（PP2）共热解对热解产物的产率和质量的影响。结果表明，共热解促进RSP降解为更多的气体。共热解改善了液态油的轻质成分并降低了O含量，这对液态燃料是有益的。除了TPE + PP2，RSP的共热解增加了二芳族化合物，聚芳族化合物和芳族化合物的含量。₂₀高。在热解气体中，在所有混合的RSP共热解中H ₂的相对含量都增加了，可以用作清洁燃料。X射线衍射（XRD）分析表明，在共热解过程中发现了新的成分，而旧的成分消失了，这表明两种不同类型的RSP之间发生了化学反应。