Abstract

Basic lanthanum tartrate (BLT) was synthesized by a simple chemical precipitation method and was characterized by elemental analysis and Fourier transform infrared spectroscopy. The effect of BLT on polyvinyl chloride (PVC) thermal stability has been studied through the Congo red test and the discoloration test. BLT displayed high stabilizing effect and the thermal stabilization time is 24 min when the percentage of BLT in PVC is 4%. The plasticizing ability of BLT is good. Tests indicated that when BLT was used as a stabilizer, the plasticizing time, plasticizing torque and balance torque of PVC were reduced. The BLT was also used to combine with one or more of zinc stearate, calcium stearate and pentaerythritol to form a composite stabilizer. When the mass ratio of basic lanthanum tartrate/zinc stearate/pentaerythritol was set to 3/1/1, the thermal stabilization time and discoloration resistance of the PVC sample were the best, and its thermal stabilization time was 44 min.

中文翻译：

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通过碱性酒石酸镧与硬脂酸锌和季戊四醇的协同作用增强了聚氯乙烯的热稳定性

摘要

通过简单的化学沉淀法合成了酒石酸镧（BLT），并通过元素分析和傅里叶变换红外光谱对其进行了表征。通过刚果红试验和变色试验研究了BLT对聚氯乙烯（PVC）热稳定性的影响。当BLT在PVC中的百分比为4％时，BLT表现出很高的稳定效果，热稳定时间为24分钟。BLT的塑化能力良好。试验表明，当使用BLT作为稳定剂时，PVC的塑化时间，塑化扭矩和平衡扭矩降低。BLT还用于与硬脂酸锌，硬脂酸钙和季戊四醇中的一种或多种结合形成复合稳定剂。将酒石酸镧镧/硬脂酸锌/季戊四醇的质量比设为3/1/1时，