Glycerol zinc and PVC heat stabilizer

Glycerin zinc can do as PVC heat stabilizers ?
Commonly used calcium and zinc heat stabilizer nontoxic, inexpensive, good lubrication , but poor thermal stability , and zinc soap often caused by products " zinc burning" , we must  antimony trioxide develop new and efficient Ca-Zn composite heat stabilizer. This cheap and easily obtained using glycerol and zinc oxide as raw materials , zinc complexes synthesized glycerol ( glycerine referred zinc ) , tested its heat stabilizers for PVC thermal stability , and the zinc complex of glycerol was studied . Using Congo red paper , thermal oven aging test method and the rheometer tests to compare zinc stearate , zinc complexes  titanium dioxide rutile of glycerol ( glycerine referred zinc ) as polyvinyl chloride (PVC heat stabilizers ) thermal stabilization studied , and the zinc complex of glycerol were studied ; also studied for PVC stabilizers of weatherability . The results show that zinc and calcium stearate of glycerol in the mass ratio of 1.0/l.5 has good synergy , glycerin , calcium zinc aim month and month more epoxidized soybean oil and vinegar, triphenyl phosphite mass ratio of 1.0 / l.5/0.2/0.2 is better synergies ; glycerol  black iron oxide zinc Deng studied more months aimed calcium compound heat stabilizer for PVC has good thermal stability , PVC and composite heat stabilizer mass ratio 100/0.9 when , PVC heat stabilizers Congo red test time up to 25, llirl, heat drying time aging test thermal stability up to 130: llin. In addition , the study found epoxidized soybean oil and triphenyl phosphite cool Shuo more months for zinc stearate , calcium compound heat stabilizer aims also has good synergy.