Application of environment-friendly Ca-Zn composite heat stabilizer in polyvinyl chloride (PVC) products

The invention relates to the application of an environment-friendly Ca-Zn composite heat stabilizer in polyvinyl chloride (PVC) products; the composite heat stabilizer takes zinc stearate, calcium stearate and di-n-octyl phthalate as foundation and comprises auxiliary stabilizer, lubricating agent and the like. The composite heat stabilizer is environment-friendly, non-toxic, efficient, low in cost and good in plasticity, and has good heat stability and processability in the processing process of PVC, thus having wide application prospect.