Preparation and Evaluation of Magnesium/Zinc Isooctanate as a Liquid Heat Stabilizer for Poly（vinyl chloride）
Magnesium/zinc isooctanate were prepared by magnesium hydroxide and zinc oxide respectively and then used as a novel liquid poly（vinyl chloride）（PVC） heat stabilizer in this work. Air oven aging test, Congo red test and conductivity test were employed to examine the static stabilizing efficiency of PVC with adding magnesium/zinc isooctanate. The thermal degradation of PVC samples at 180℃ for 60 min was investigated by thermogravimetry analysis. And the thermal degradation of PVC samples in the temperature range from 25℃ to 600℃ at a heating rate of 10℃/min was also evaluated. These results showed that the static thermal stability of PVC sample was significantly improved after adding magnesium/zinc isooctanate stabilizer compared with commercially available liquid calcium/zinc stabilizer when magnesium and zinc metal contents are respectively 2% and 2.5%. Besides, they has excellent dynamic thermal stability and mechanical properties in the PVC products according to dynamic double roller mixing experiment and mechanics performance test.
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万方数据
维普
