环保型钙锌复合热稳定剂与增塑剂在 PVC中的协效作用研究

Abstract

Abstract: The self-made rubber seed oil-based epoxy fatty acid methyl ester(ERSO) was used as plasticizer and the oil-based polyacid calcium-zinc composite(OMFCTS) was used as thermal stabilizer. Then the combination of ERSO and OMFCTS was used in PVC modification with β-diketone as co-stabilizer. The thermal and mechanical properties of eight modified poly(vinyl chloride) (PVC) blends were determined by means of the heat aging test methods,Congo-red test,TGA,TGA-FTIR,TGA-MS,tensile test and DMA. The results showed that the PVC blends with ERSO/OMFCTS had the optimal thermal stability,good mechanical properties,and lower glass transition temperature(T_g,38.2℃) than that of the PVC blends with DOP/CaSt₂/ZnSt₂,ERSO/CaSt₂/ZnSt₂ or DOP/OMFCTS. And its static thermal stability time at 200℃ was 46'21" and the tensile elongation at break was 265.6%. It could be concluded that there was an obvious synergistic effect between ERSO and OMFCTS,and the ERSO/OMFCTS could replace the tradational plasticizer dioctyl phthalate and calcium/zinc stability of stearic acid(CaSt₂/ZnSt₂) effectively.

Key words: poly(vinyl chloride), rubber seed oil epoxy fatty acid methyl ester(ERSO), plasticization, thermal stability

CLC Number:

TQ35

LI Mei, DING Chengxiang, CHEN Jie, ZHU Jinhua, WANG Mei, XIA Jianling. Synergistic Effect of Environmental Ca-Zn Composite Thermal Stabilizer and Plasticizer on Poly(vinyl chloride)[J]. bce, 2017, 51(2): 1-7.

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Synergistic Effect of Environmental Ca-Zn Composite Thermal Stabilizer and Plasticizer on Poly(vinyl chloride)

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