| abstract |
The invention relates to a high-efficiency environment-friendly stabilizing agent used for PVC section bars, which belongs to the technical field of PVC processing aids. The stabilizing agent comprises the following raw materials by weight: 20 to 30 of calcium stearate, 20 to 30 of zinc stearate, 10 to 15 of polyol ester, 1 to 3 of an anti-oxidant, 0.5 of an ultraviolet ray absorber, 10 to 30 of hydrotalcite, 3.5 of beta-diketone, 5 to 15 of alpha-phenylindole and 8 to 15 of epoxy compounds. The invention enables the problem of thermal decomposition of PVC section bars during processing to beovercome and the problem of discoloring because of long-term illumination and exposure in air during daily usage of PVC section bars to be solved, meeting developmental needs of section bars in China. |