对聚氯乙烯／再生胶共混工艺，硫化条件与共混物力学性能的关系进行了研究。共混和硫化条件分别为１６０℃×１２ｍｉｎ和１５０℃×５ｍｉｎ时，力学性能可达到最佳值。在此基础上，提出了二阶共混工艺，该工艺可减少高温混炼时再生胶的用量，促进聚氯乙烯在再生胶中的分散，有利于共混物性能的改善，并用扫描电子显微镜证实了二阶共混工艺的优越性。 Polyvinyl chloride / reclaimed rubber blend process, curing conditions and the relationship between the mechanical properties of blends were studied. When the blending and curing conditions were 160 ℃ × 12min and 150 ℃ × 5min respectively, the mechanical properties could reach the best value. On this basis, the second-stage blending process is proposed, which can reduce the amount of reclaimed rubber during high-temperature mixing and promote the dispersion of polyvinyl chloride in reclaimed rubber, which is beneficial to the improvement of the properties of the blend. Scanning electron microscopy Confirmed the superiority of the second-order blending process.